Harshita Brella, 24, was found dead inside a Vauxhall Corsa in Ilford, east London, on 14 November last year, four days after she is suspected of having been strangled in Corby, Northamptonshire.
On 29 August, it was reported to Northamptonshire Police that she had suffered domestic abuse by her then husband Pankaj Lamba.
The suspect was arrested on 3 September and released on police bail, with conditions not to contact his wife, and issued with a Domestic Violence Protection Order.
A manhunt remains ongoing to locate Lamba who is believed to be in India after fleeing the UK.
The IOPC has concluded its investigation into the actions of two detectives who were assigned to the domestic abuse investigation, plus two more senior officers who had supervisory responsibility.
It found the two detective constables have a case to answer for gross misconduct.
The investigation also concluded there is a misconduct case to answer for a sergeant and chief inspector.
The IOPC said investigators believe a police disciplinary panel could find the officers did not appropriately review the case, set investigative actions, seek supervisory advice, or keep Ms Brella sufficiently updated.
Officers may potentially have breached police standards of professional behaviour relating to duties and responsibilities, the watchdog added.
'This is a harrowing case'
IOPC director of engagement Derrick Campbell said: "This is a harrowing case in which a young woman was killed not long after arriving in the UK to start a new life.
"Our thoughts remain with Ms Brella's family and friends as they seek justice for what happened.
"Our independent investigation examined Northamptonshire Police's response to the disclosure made by Ms Brella that she'd suffered domestic abuse.
"It has scrutinised their investigation strategy, actions taken, communication with the victim, and any safeguarding considerations.
"After a thorough review of the evidence, we have determined four officers should face disciplinary proceedings.
"It will be for a police disciplinary panel to determine whether the allegations are proven."
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The IOPC said it will now be for Northamptonshire Police to organise disciplinary proceedings.
The investigation has also identified areas of potential learning for Northamptonshire Police in relation to its domestic abuse investigation unit, the watchdog added.
Known for hits including You Can Get It If You Really Want, The Harder They Come, and Many Rivers To Cross, his career spanned six decades.
His wife, Latifa Chambers wrote on Instagram: "It's with profound sadness that I share that my husband, Jimmy Cliff, has crossed over due to a seizure followed by pneumonia.
"I am thankful for his family, friends, fellow artists and coworkers who have shared his journey with him.
"To all his fans around the world, please know that your support was his strength throughout his whole career. He really appreciated each and every fan for their love."
Thanking the medical staff who helped during his illness, she added: "Jimmy, my darling, may you rest in peace. I will follow your wishes."
Signed by his wife, and two of his children, Latifa and Lilty, the statement concluded: "We see you Legend."
Tributes to the singer included those from Jamaican Prime Minister Andrew Holness, calling him "a true cultural giant whose music carried the heart of our nation to the world... Jimmy Cliff told our story with honesty and soul. His music lifted people through hard times, inspired generations, and helped to shape the global respect that Jamaican culture enjoys today."
UB40 star Ali Campbell, who covered Cliff's song Many Rivers To Cross in 1983, also paid tribute, saying he was "absolutely heartbroken to hear about the passing of a Reggae forefather" in a post on X.
Campbell also called Cliff "a pillar of our music, and one of the first to carry reggae out into the world".
A legend of music and screen
A two-time Grammy-winning artist, Cliff was awarded the Jamaican Order of Merit in 2003, the highest honour in the arts and sciences, from the Jamaican government.
Over the years, he would work with stars including the Rolling Stones, Sting, Elvis Costello, Annie Lennox, Paul Simon and Wyclef Jean.
He was inducted into the Rock and Roll Hall of Fame in 2010.
A prolific writer, frequently expressing his humanitarian views through his work, his 1969 track Vietnam was reportedly described by Bob Dylan as "the best protest song" he had ever heard.
Cliff was also well known for cover versions of songs, including Johnny Nash's I Can See Clearly Now, which appeared on the soundtrack of the 1993 movie Cool Runnings, and Cat Stevens' Wild World.
He twice performed on high-profile US chat show Saturday Night Live.
An actor and a musician, as well as singing the title track of 1972 cult classic The Harder They Come, Cliff also starred in it.
One of the first major commercial releases to come out of Jamaica, the movie is credited with bringing reggae to the world, as well as showing a grittier and more realistic side to the country.
During this time, Cliff's fame rivalled Bob Marley as the reggae's most prominent artist.
The storyline, which revolved around Cliff's character, Ivan, moving to Kingston, Jamaica, to make it as a musical superstar, had parallels with his own.
'Hurricane Hattie'
He was born James Chambers, during a hurricane, on 30 July 1944, in St James Parish, northwestern Jamaica.
In the 1950s, he moved with his father from the family farm to Kingston, determined to succeed in the music industry.
He began writing as Jamaica was gaining its independence from Britain, and as the early sounds of reggae - first called ska - were being developed.
At just 14, he became nationally famous for the song Hurricane Hattie, which he had written himself.
Cliff would go on to record over 30 albums and perform all over the world, including in Paris, in Brazil and at the World's Fair, an international exhibition held in New York in 1964.
The following year, Island Records' Chris Blackwell, the producer who launched Bob Marley And The Wailers, invited Cliff to work in the UK.
'I still have many rivers to cross!'
Speaking about his burning passion for life during a 2019 interview, when the star had begun losing his sight, Cliff said: "When I've achieved all my ambitions, then I guess that I will have done it and I can just say 'great'.
"But I'm still hungry. I want it. I've still got the burning fire that burns brightly inside of me - like I just said to you. I still have many rivers to cross!"
Cliff's last studio album, Refugees, made with Wyclef Jean, was released in 2022, and the singer said he wrote the title track "due to emotional feelings towards freedom taken away from human beings".
It will be big in terms of tax rises, big in terms of setting the course of the economy and public services, and big in terms of political jeopardy for this government.
The chancellor has a lot of different groups to try to assuage and a lot is at stake.
"There are lots of different audiences to this budget," says one senior Labour figure. "The markets will be watching, the public on the cost of living, the party on child poverty and business will want to like the direction in which we are travelling - from what I've seen so far, it's a pretty good package."
The three core principles underpinning the chancellor's decisions will be to cut NHS waiting lists, cut national debt and cut the cost of living. There will be no return to austerity and no more increases in government borrowing.
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What flows from that is more investment in the NHS, already the big winner in the 2024 Budget, and tax rises to keep funding public services and help plug gaps in the government's finances.
Some of these gaps are beyond Rachel Reeves' control, such as the decision by the independent fiscal watchdog (the Office for Budget Responsibility) to downgrade the UK's productivity forecasts - leaving the chancellor with a £20bn gap in the public finances - or the effect of Donald Trump's tariffs on the global economy.
Others are self-inflicted, with the chancellor having to find about £7bn to plug her reversals on winter fuel allowance and welfare cuts.
By not pulling the borrowing lever, she hopes to send a message to the markets about stability, and that should help keep down inflation and borrowing costs low, which in turn helps with the cost of living, because inflation and interest rates feed into what we pay for food, for energy, rent and mortgage costs.
That's what the government is trying to do, but what about the reality when this budget hits?
This is going to be another big Labour budget, where people will be taxed more and the government will spend more.
Only a year ago the chancellor raised a whopping £40bn in taxes and said she wasn't coming back for more. Now she's looking to raise more than £30bn.
That the prime minister refused to recommit to his manifesto promise not to raise income tax, VAT or national insurance on working people at the G20 in South Africa days ahead of the budget is instructive: this week we could see the government announce manifesto-breaking tax rises that will leave millions paying more.
Freeze to income thresholds expected
The biggest tax lever, raising income tax rates, was going to be pulled but has now been put back in neutral after the official forecasts came in slightly better than expected, and Downing Street thought again about being the first government in 50 years to raise the income tax rate.
On the one hand, this measure would have been a very clean and clear way of raising £20bn of tax. On the other, there was a view from some in government that the PM and his chancellor would never recover from such a clear breach of trust, with a fair few MPs comparing it to the tuition fees U-turn that torpedoed Nick Clegg's Lib Dems in the 2015 general election.
Instead, the biggest revenue raiser in the budget will be another two-year freeze on income tax thresholds until 2030.
This is the very thing that Reeves promised she would not do at the last budget in 2024 because "freezing the thresholds will hurt working people" and "take more money out of their payslips". This week, those words will come back to haunt the chancellor.
Two-child cap big headline grabber
There will also be more spending and the biggest headline grabber will be the decision to lift the two-child benefit cap.
This was something the PM refused to commit to in the Labour manifesto, because it was one of the things he said he couldn't afford to do if he wanted to keep taxes low for working people.
But on Wednesday, the government will announce it's spending £3bn-a-year to lift that cap. Labour MPs will like it, polling suggests the public will not.
What we are going to get on Wednesday is another big tax and spend Labour budget on top of the last.
For the Conservatives, it draws clear dividing lines to take Labour on. They will argue that this is the "same old Labour", taxing more to spend more, and more with no cuts to public spending.
Having retreated on welfare savings in the summer, to then add more to the welfare bill by lifting the two-child cap is a gift for Labour's opponents and they will hammer the party on the size of the benefits bill, where the cost of supporting people with long-term health conditions is set to rise from £65bn-a-year to a staggering £100bn by 2029-30.
Mansion tax on the cards
There is also a real risk of blow-up in this budget as the chancellor unveils a raft of revenue measures to find that £30bn.
There could be a mansion tax for those living in more expensive homes, a gambling tax, a tourism tax, a milkshake tax.
Ministers are fearful that one of these more modest revenue-raising measures becomes politically massive and blows up.
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This is what happened to George Osborne in 2012 when he announced plans to put 20% of VAT on hot food sold in bakeries and supermarkets. The plan quickly became an attack on the working man's lunch from out-of-touch Tories and the "pasty tax" was ditched two months later.
And what about the voters? Big tax and spend budgets are the opposite of what Sir Keir Starmer promised the country when he was seeking election. His administration was not going to be another Labour tax and spend government but instead invest in infrastructure to turbocharge growth to help pay for better services and improve people's everyday lives.
Seventeen months in, the government doesn't seem to be doing things differently. A year ago, it embarked on the biggest tax-raising budget in a generation, and this week, it goes back on its word and lifts taxes for working people. It creates a big trust deficit.
Government attempts to tell a better story
There are those in Labour who will read this and point to worse-than-expected government finances, global headwinds and the productivity downgrades as reasons for tax raising.
But it is true too that economists had argued in the run-up to the election that Labour's position on not cutting spending or raising taxes was unsustainable when you looked at the public finances. Labour took a gamble by saying tax rises were not needed before the election and another one when the chancellor said last year she was not coming back for more.
After a year-and-a-half of governing, the country isn't feeling better off, the cost of living isn't easing, the economy isn't firing, the small boats haven't been stopped, and the junior doctors are again on strike.
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The PM told me at the G7 summit in Canada in June that one of his regrets of his first year wasn't "we haven't always told our story as well as we should".
What you will hear this week is the government trying to better tell that story about what it has achieved to improve people's lives - be that school breakfast clubs or extending free childcare, increasing the national living wage, giving millions of public sector workers above-inflation pay rises.
You will also hear more about the NHS, as the waiting lists for people in need of non-urgent care within 18 weeks remain stubbornly high. It stood at 7.6m in July 2024 and was at 7.4m at the end of September. The government will talk on Wednesday about how it intends to drive those waits down.
But there is another story from the last 18 months too: Labour said the last budget was a "once in a parliament" tax-raising moment, now it's coming back for more. Labour said in the election it would protect working people and couldn't afford to lift the two child-benefit cap, and this week could see both those promises broken.
Can PM convince his MPs?
Labour flip-flopped on winter fuel allowance and on benefit cuts, and is now raising your taxes.
Downing Street has been in a constant state of flux as the PM keeps changing his top team, the deputy prime minister had to resign for underpaying her tax, while the UK's ambassador to the US, Peter Mandelson, was sacked over his ties to the Jeffrey Epstein, the late convicted paedophile. It doesn't seem much like politics being done differently.
All of the above is why this budget is big. Because Wednesday is not just about the tax and spend measures, big as they may be. It is also about this government, this prime minister, this chancellor. Starmer said ahead of this budget that he was "optimistic" and "if we get this right, our country has a great future".
But he has some serious convincing to do. Many of his own MPs and those millions of people who voted Labour in, have lost confidence in their ability to deliver, which is why the drumbeat of leadership change now bangs. Going into Wednesday, it's difficult to imagine how this second tax-raising budget will lessen that noise around a leader and a Labour government that, at the moment, is fighting to survive.
The rapper was charged at the end of last month after a 20-year-old died in a road incident in northeast London.
The musician, whose real name is Justin Clarke-Samuel, initially faced a single count of causing the death of Yubin Tamang by dangerous driving.
He now faces two further charges of driving dangerously before and after the collision on 18 October.
It is alleged he drove dangerously in Tavistock Place, in the Bloomsbury area of central London, and on other roads in the borough of Camden, north London.
The collision with Mr Tamang occurred on Redbridge Lane, Ilford, at 11.33pm on 18 October, the Met Police said. Clarke-Samuel is accused of failing to stop after his BMW hit the victim.
Mr Tamang died on 20 October.
Clarke-Samuel allegedly continued to drive dangerously in Worcester Crescent, Redbridge, on the journey back to his home in King's Avenue, Woodford, east London.
The black BMW, which is allegedly registered and insured in the defendant's name, was said to have suffered significant damage.
The rapper has been in custody since a preliminary appearance at Barkingside Magistrates' Court on 27 October.
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On Monday, he appeared at the Old Bailey by videolink from Pentonville prison and spoke to confirm his name.
Mr Tamang's family watched in the court, having travelled to the UK from Nepal.
Adjourning the case, Judge Nigel Lickley KC said Clarke-Samuel could appear in court by videolink again next time as he further remanded him in custody.
The annual commemoration will fall on 21 August, and will be marked in a different place each year to recognise the widespread impact of terrorism around the country.
It comes after a 12-week public consultation showed 91% supported the plan for a national day, and 84% strongly supported the proposal.
How the day will look, including a final name and symbol, will be worked out collaboratively between survivors and ministers, according to the Home Office.
But it will "honour and remember victims and survivors of terrorism", encouraging survivors to access specialist support, spotlighting their stories, and educating the public.
A spokesperson for the Home Office confirmed that it would not be a bank holiday.
Jo Berry, whose father Sir Anthony Berry was killed in the IRA Brighton hotel bombing in 1984, said victims of terrorism would no longer be "a footnote of history".
She said: "What we remember as a nation matters. It sends a signal about what we value.
"For too long, survivors of terror attacks, and those who have been killed in them, have been a footnote of history. Survivors have felt ignored and forgotten.
"That's why Survivors Against Terror launched a campaign for a new national day of memorial three years ago."
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Travis Frain, who survived the Westminster Bridge attack in 2017, also backed the campaign.
He said: "A national day would provide an opportunity to remember those we have lost, to pay tribute to the bravery and resilience of those who have survived these heinous acts, and for us to look forward to the future to educate the next generation."
The date was chosen to coincide with the UN International Day of Remembrance and Tribute to the Victims of Terrorism.
Plans have also been announced for a new support hub to help victims in the aftermath of terror attacks.