A 32-year-old man was arrested on suspicion of murder in Croydon on the morning and remains in custody.
16 year old Lathaniel, from Stockwell, died at the scene following the shooting in Paradise Road on Tuesday afternoon.
Detective Chief Inspector Sarah Lee said: “Our detectives are working hard to piece together the events of Tuesday afternoon and identify those responsible for killing Lathaniel.
“We continue to appeal for anyone with information about Lathaniel’s murder to please come forward and speak to us.”
Officers were alerted at 15:21hrs on Tuesday, 4 March to reports of a shooting and officers attended with emergency service colleagues.
Medics from London’s Air Ambulance and the London Ambulance Service treated Lathaniel at the scene but despite their efforts, he sadly died. His family are being supported by officers.
If you have any information which may help the investigation, call 101 with the reference 4116/04MAR.
You can also contact the independent charity Crimestoppers on 0800 555 if you want to remain anonymous.
