Two men arrested by police investigating the murder of Oliver Tetlow in Harlesden have been bailed.
On Friday a 29-year-old man was arrested on suspicion of murder and an 18-year-old man was arrested on suspicion of robbery.
The 29-year-old has been bailed until a date in June while the 18-year-old was bailed until early May.
Detectives continue to appeal for witnesses and have asked for anyone who may have images or footage from the incident to contact them.
On Wednesday, police were called shortly before 10pm to reports of a shooting in Church Road at the junction with Conley Road.
A man was found with gunshot wounds and died at the scene. He has since been identified as Oliver Tetlow, 27, from Harlesden
A post-mortem examination held on Friday at Northwick Park hospital mortuary gave cause of death as gunshot wounds.
Detective Chief Inspector Mark Lawson, who is leading the investigation, said: "The investigation to identify and arrest those responsible for this senseless murder is moving at a very fast pace, and I would like to thank everyone who has so far come forward and spoken to the police.
"At this early stage in the investigation, we are exploring that the shooting was gang related - however I am satisfied that the victim was not the intended target and this was a tragic case of mistaken identity.
"Early indications are that shots were fired from an automatic weapon, although a firearm has not been recovered so we cannot speculate on the exact type.
"We do know that the victim was shot by a male who got out of a dark coloured vehicle. After the shooting, this vehicle then travelled south along Church Street towards Harlesden Town Centre. I would like to hear from anyone who saw a vehicle which perhaps caught their attention.
"We are aware of information about the murder which is circulating via social media, and I would appeal to anyone who has information which could assist the investigation to contact police."
Anyone who witnessed the incident or has any information is asked to contact the incident room on 020 8358 0200 or contact Crimestoppers on 0800 555 111
