Four people have been arrested in connection with the fatal shooting of a teenager in his bedroom.
Michael Dosunmu was shot at home
Michael Dosunmu, 15, was shot by two gunmen in Diamond Street, Peckham, south-east London, in the early hours of Tuesday.
Police arrested the four on Wednesday evening and took the suspects to stations in south London.
Police say the church-going teenager may not have been the intended target of the gunmen.
Michael's older sister was also at home when two gunmen forced their way in the house.
She gave her brother first aid and he was able to say a few words to her.
But he died in hospital less than an hour later, just days after celebrating his 15th birthday.
He was a regular at the Celestial Church of Christ, in nearby Bird In Bush Road, and attended Archbishop Michael Ramsey Technology College in Camberwell, south-east London.
Officers from Scotland Yard's Operation Trident team, which investigates gun crime in London's African-Caribbean communities, have not found any link between the boy and local gangs.
Det Supt Gary Richardson, from Trident, said: "This does not appear to have been a botched burglary. I believe these premises were specifically targeted."
Officers have said they have established a link between Michael's murder and a fatal stabbing that took place near his home on Saturday.