Police were called to Emslie Horniman's Pleasance Park at around 7.20pm on 21 July 2024 following reports of a shooting.
CCTV showed a man calmly approaching the children's play area before firing a single shot.
Rene Graham, 15, suffered a gunshot wound to the chest and died at the scene.
Aderahman Boumzough, 25, of no fixed address, appeared at Woolwich Crown Court on Friday, where he was found guilty of the murder following a two-week trial.
Footage also showed the suspect chasing and attempting to shoot a second victim, but the gun jammed and he fled.
In March 2025, Rene's mother, Janay John-Francois, issued a plea urging the public to come forward with any information, telling Sky News: "It's broken, shattered my life... It's killing me on the inside."
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A £20,000 reward was also offered by Crimestoppers for information that would help solve the crime.
During their investigation, police used forensic work, witness enquiries, and detailed analysis of CCTV tracing the suspect's movements.
Boumzough was arrested on 2 September 2025 and charged with murder and attempted murder the next day.
Police subsequently uncovered a video on Boumzough's phone in which he rapped while appearing to reference the firearm malfunction.
He said: "Don't you hate it when your ting jams? I was prepared to take soul, but Allah had a different plan".
Boumzough was found guilty of murder and attempted murder following a two-week trial. He will appear at Woolwich Crown Court for sentencing on 3 July.
A senior Met detective thanked a small pocket of the Ladbroke Grove community for their support in the case.
Detective Chief Inspector Alison Foxwell, who led the investigation, said: "Following Rene's senseless murder, we made a direct plea to both the Ladbroke Grove community and those who had attended the event where he lost his life. A year on, we renewed that appeal, urging anyone with information to come forward and help us secure justice for Rene's family.
"As part of that appeal, we released CCTV footage showing Boumzough pulling a firearm from his pocket in broad daylight, fleeing the scene, and attempting to shoot a second man as he made his escape.
"While only a small number of people came forward, I would like to thank those individuals who provided statements and supported the investigation, including attending court, who refused to allow a dangerous individual such as Boumzough to live amongst them.
"This conviction is the result of relentless work by officers who painstakingly reviewed hundreds of hours of CCTV footage to trace the gunman's movements before and after the shooting."
"Two people were in the car and sadly Kerry Coombes, a 33-year-old woman, was pronounced dead at the scene," British Transport Police (BTP) said in a statement.
The force said it had launched a criminal investigation into the crash in Hoghton, shortly before 8.50am on Thursday, describing it as a "shocking and tragic incident".
"An eight-year-old girl remains in hospital in a critical but stable condition," the statement added.
Fire crews and ambulances were called to the scene with BTP. No other injuries were reported by passengers on the train.
Officers have not described the relationship between the woman and girl, nor elaborated on what happened, but have asked the public not to speculate about the circumstances.
Ms Coombes' family paid tribute in a statement and said she "brought so much love, laughter and kindness".
"Kerry was a loving daughter, sister, partner and devoted mum who meant everything to us.
"She had the biggest heart, always put other people before herself and brought so much love, laughter and kindness into the lives of everyone who knew her.
"The loss of Kerry has left a hole in our family that can never be filled. We are heartbroken and are trying to come to terms with what has happened."
Senior investigating officer, Detective Chief Inspector Paul Attwell, said: "This was a shocking and tragic incident, and our specialist officers will continue to support Kerry's family and friends throughout this ordeal.
"Following our initial enquiries, a criminal investigation into the incident has now been launched, and I would ask the public not to speculate, as further updates will be provided in due course."
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He added that the force was continuing to appeal for witnesses or those with information to come forward.
The Rail Accident Investigation Branch said on Thursday it had sent a team of inspectors to the crash site who were "gathering evidence as part of a preliminary examination".
Rossi, originally from Rhode Island, was jailed last year for raping two women in Utah in 2008.
The Utah Department of Corrections said the 38-year-old was pronounced dead at a local hospital.
It said: "Rossi died from complications of an existing medical condition after choosing to discontinue medical treatment.
"This notification follows communication with Rossi's family and his victims."
It added: "Rossi was serving a cumulative sentence of 10 years to life for two counts of first degree felony rape."
Utah authorities said they could not disclose details about Rossi's health problems, but in court hearings he often appeared in a wheelchair and used oxygen.
He was convicted separately in August and September last year of raping two women.
Rossi left a "trail of fear, pain and destruction" behind him, one of the victims told a court before Rossi was sentenced in October.
"This is not a plea for vengeance. This is a plea for safety and accountability, for recognition of the damage that will never fully heal," she said.
In his first Utah trial, Rossi's public defender denied the rape claim.
The victim told a court in Salt Lake County that she and Rossi began a relationship while she was recovering from a traumatic brain injury in 2008.
The woman said they began dating after she responded to a personal ad Rossi had placed on Craigslist, and they quickly became engaged.
She said she paid for their dates and covered Rossi's rent.
The relationship soured when Rossi started "becoming controlling and saying mean things to me", she told the court.
On the day she was raped, she said Rossi had pounded on her car and used his body to block her from pulling out of a garage.
After she agreed to enter the house to talk, he pushed her on to his bed, held her down and "forced me to have sex with him", she testified.
How Rossi was caught
He was first identified in 2018 after a decade-old DNA rape kit was examined.
But in February 2020 - months after he was charged in one of the cases - an online obituary claimed he had died of non-Hodgkin lymphoma.
Rossi was arrested in Scotland the following year while being treated for COVID, after hospital staff recognised his distinctive tattoos - including the crest of a university he never attended - from an Interpol red notice.
A protracted court battle meant he wasn't extradited until January 2024, with Rossi claiming he was an Irish orphan named Arthur Knight who was being framed.
Rossi claimed that he had been given the tattoos while he was in a coma in hospital so that he resembled the wanted man.
At one stage he claimed he was so unwell he was unable to raise his arms above his head, despite having visibly done so in court a day earlier.
In a bizarre appearance at a Utah court after his extradition, Rossi spoke in an apparent English accent and referred to the judge as "m'lady" and gave his name as Arthur Knight Brown in a laboured, breathy tone.
Investigators identified at least a dozen aliases that Rossi, whose legal name was Nicholas Alahverdian, had used to evade capture over the years.
Rossi had married a woman in Bristol and the pair moved to Glasgow.
Mohammed Fahir Amaaz, 21, punched PC Lydia Ward in the face, knocking her down and breaking her nose, and assaulted PC Ellie Cook.
Amaaz was also convicted of the earlier assault of a member of the public at an airport Starbucks.
Reading a statement during Amaaz's sentencing hearing at Liverpool Crown Court, Ms Ward said: "I want you to take a good look at me."
"You chose to attack a female. You knocked me to the ground with one punch, with so much force you broke my nose.
"How would you feel if a male did that to your mother? How would you feel if it was your mother standing here today explaining how she was violently assaulted by a male?
"What you did was cowardly."
The incident happened at a car park pay area on 23 July 2024 after Amaaz and his 26-year-old brother, Muhammad Amaad, went to collect their mother from a flight.
Police were called after Amaaz went into Starbucks and headbutted Abdulkareem Ismaeil - who he claimed racially abused his mother on the plane.
The brothers resisted when officers tried to detain them and told the court they did not know they were being approached by police.
Prosecutors said Amaaz threw 10 punches, two elbow strikes and a kick, while Amaad aimed six blows at firearms officer PC Zachary Marsden.
Footage of a kick and stamp by PC Marsden on Amaaz was widely shared on social media in the days after the incident, sparking protests.
Days later a CCTV clip leaked to the media revealed that beforehand a number of punches were thrown towards the male firearms officer and his two female colleagues.
Ms Ward said: "What angers me is that afterwards, when only part of the footage was out in the public, you played the victim.
"You are not a victim. I am the one who was injured, not you. You had the whole world listening to you and you showed no remorse. Not one ounce.
"You allowed the public to feel sorry for you. You made out like we had done something wrong when all we were doing was our job."
Jurors at Liverpool Crown Court found Amaaz guilty of actual bodily harm to PC Ward, and of assaulting PC Cook and Mr Ismaeil.
Amaaz and Amaad were also charged with assaulting firearms officer PC Marsden, but the jury was unable to reach a verdict. Last month, a decision was made by the Crown Prosecution Service not to pursue a third trial.
The men claimed they acted in lawful self-defence, or defence of each other.



