Shakim Purnell-Taylor, 19 of Gunyard Mews, SE18 was found guilty on Friday, 10 January of the murder of Leo following a trial at the Old Bailey.
He had pleaded guilty to possession of an offensive weapon (a knife) and robbery at an earlier hearing.
Purnell-Taylor was sentenced today to life in prison with a recommendation he serve a minimum of 22 years.
He was also sentenced for:
Robbery – six years and three months imprisonment to run concurrently.
Possession of a knife – 21 months imprisonment to run concurrently.
For this offence he was sentenced to 36 months imprisonment to run concurrently
It is thought that Purnell-Taylor had received a call informing him a drugs courier would be attending the area – it was Purnell-Taylor’s intention to rob him.
Having seen Leo arrive on a bicycle at the location and enter an alleyway off Tellson Avenue, Purnell-Taylor – armed with a knife – followed him and immediately attacked him injuring him with the knife.
He grabbed Leo from behind, stealing a rucksack from him, before running out of the alleyway and taking Leo’s bike.
As he tried to cycle off, Leo emerged from the alley and knocked Purnell-Taylor off the bike. A struggle ensued between the two men, during which Purnell-Taylor stabbed Leo six times. He then picked up Leo’s phone and fled the scene on foot – Leo’s bag was left in the street. Purnell-Taylor then returned home to change his clothes before leaving the area.
Leo collapsed and called out for help. He was assisted by members of the public until emergency services arrived. Leo was rushed to hospital but could not survive his injuries and died later that evening.
An investigation was launched by homicide detectives from Specialist Crime and following analysis of CCTV from the area, Purnell-Taylor was identified as the assailant. He was traced to an address in Kennington and arrested on 14 July. When arrested, Purnell-Taylor had a cut on his hand – he claimed this had been done while cooking, but the injury had in fact been sustained during the fight with Leo.
In interview, he refused to answer questions about the incident, only saying that he did not initially recognise the location when shown images of the scene.
But CCTV, along with phone evidence, placed him at the scene and he was charged with Leo’s murder.
Detective Sergeant Rob Tickle from Specialist Crime South led the investigation. He said: “I am pleased with the sentence today, Purnell-Taylor claimed that he was acting in self-defence but the jury decided he did no such thing and deliberately murdered Leo.
“Leo Marcus died at his hands, the victim of an opportunistic and violent street robber, who I have no doubt set out that day carrying a kitchen knife with every intention of using it; which he did with devastating consequences.
“Leo’s death was a horrific tragedy for him and for his family, a waste of a promising, young life. His family’s dignity throughout this process has been deeply impressive to any of us who have seen it.
“I would also like to pay tribute to the members of the public and to the emergency services who worked so valiantly in attempting to save Leo’s life. I must also highlight the dedication and relentlessness of the murder team detectives who worked tirelessly to bring Purnell-Taylor to justice for Leo’s family.”