The Metropolitan Police have named Ogarra Dixon as the man fatally shot in Brixton.
Detectives launched a murder investigation after the 24-year-old was shot dead in Marcella Road, after arriving there alone in his black Vauxhall Astra on Wednesday, 17 June.
Ogarra was seen leaving his car and walking towards a nearby block of flats and at 00.25am was seen stumbling away from his car before collapsing at the junction with Serenaders Road.
Police were called at 00.48am to reports of a seriously injured man at Kings College Hospital, Denmark Hill, south east London.
Ogarra Dixon was pronounced dead at 01.25am and a post-mortem examination held at Greenwich Mortuary on Thursday (18 June) found the cause of death to be a gunshot wound to the chest.
Dixon was brought into the hospital by three men who have since come forward and spoken with officers.
Detective Chief Inspector Will Reynolds said: "I am keen to speak to anyone who may have seen Ogarra in Marcella Road or know why he went there. I am aware that there was a large group of people in the area close to the flats at the time of the shooting. I would urge them to come forward as they may have information that could lead to the identification of the gunman. I would like to reassure anyone worried about contacting the police that they will be treated with the utmost sensitivity."
Crimestoppers is offering a reward of up to £10,000 for information which leads to the arrest and conviction of the person or persons responsible for the murder of Ogarra Dixon.