A 17-year-old girl scout was murdered by a teenager trying to “bang out” a rival, jurors at the Old Bailey have been told.
Victim Jodie Chesney was with friends when she was stabbed in the back in a park in Harold Hill, East London, on March 1.
Svenson Ong-a-Kwie, 19, was allegedly seeking revenge after he was stabbed a couple of months earlier.
He snuck up on the sixth-form student having been tipped off his rival was in the park and killed her, jurors heard.
Manuel Petrovic, 20, and a 16-year-old who cannot be named, took Ong-a-Kwie to the park in black Vauxhall Astra and waited nearby.
Croatian Petrovic was arrested by police on suspicion of murder at his sister’s home in Leicestershire on 5 March.
While being held on remand in HMP Belmarsh he was visited by friend Gemma Grey on 3 August, the court heard.
Part of their conversation was recorded and was today (weds) read out to the jury by Joel Smith, prosecuting.
Petrovic told Ms Grey that Ong-a-Kwie received information about his unnamed rival.
According to the transcript, Petrovic said: “You know what actually happened?”
Ms Grey asked: “What?”
“They went to bang out on their ops (rivals) and banged out the wrong people,” added Petrovic.
When asked how he knew, Petrovic said: “Because I know that…It was to do with Svenson’s op – they cheffed (stabbed) him up a couple of month or something, a couple of months before.
“Someone gave him the drop (tip off). He went to ride out and rid out on the wrong people in the park and they thought it was them because they chill in the area.
“That’s why she (Jodie) got it from behind.”
Jurors heard two unidentified males where in the park on the night of the attack and were looking at Jodie before leaving shortly before she was killed.
There is no suggestion they were involved in her killing.
Petrovic explained how the tip came about while speaking to Ms Grey: “They got their drop their self bruv.
“Because they were in a cab in Harold Hill when they text me saying ‘ring me, ring me asap, need to come and see you asap.'”
Top news stories from Mirror Online
Earlier conversations recorded in HMP Belmarsh reveal Petrovic musing about being prosecuted under drugs charges and a possible sentence of around five years.
“I get five, I might even get two suspended. A year and half behind doors out for Xmas.”
While he was waiting for his trial to start, he and friends discussed the press coverage of the trial.
Referring to a court sketch of Petrovic, his friend said: “Your ears, it is awful. Mate they have taken the p*** with your ears.”
Ms Grey also offered to cut her friend’s hair during their conversation: “You can see right through it.”
“I have been trying to let it grow. I am not letting anyone cut my hair I would rather you did it,” Petrovic replied.
Ms Grey and Petrovic also spoke about the length of sentence if he was convicted for the murder of Jodie believing it could range from 15 to 30 years.
Ms Grey said: “You have just got to look at this like a little holiday camp.”
But Petrovic had quipped HMP Belmarsh should be dubbed HMP Hellmarsh after bemoaning the shower facilities, the court heard.
Petrovic, of Collier Row, east London, Ong-a-Kwie, of Hillfoot Road, Romford, a 17-year-old and 16-year-old, both from east London, who cannot be named, deny her murder.
The trial continues.