Police hunting a gunman who shot dead a man at traffic lights are trying to trace people in three vehicles seen moments before the shooting.
Paul Pike was in a red van in Crosby Road North, Waterloo, Merseyside, at 2320 BST on Saturday when a gunman opened fire from a silver Audi TT.
The 23-year-old, from Belle Vale, was pronounced dead at the scene.
Police have released a CCTV image which shows a silver Ford C-Max, a black taxi and a third car at the traffic lights.
Police said it was a targeted attack, but the motive is unclear.
Det Ch Insp Neil Bickley, from Merseyside Police, said: "We've issued the CCTV in the hope we can trace the occupants as they could have vital information.
"This was taken just moments before Paul Pike was fatally shot and the people in these cars may not realise they may have seen something crucial.
"We believe the car on the left is a silver Ford C-Max which has probably just driven by Paul Pike's red transit van and the offenders in the Audi."
Mr Bickley said he also wanted to speak to anyone who was in the Liver pub or walking along Crosby Road North near the time of the shooting.
The Audi TT - which was stolen from Hawden in North Wales - was found burnt out in Fairfield Street, Waterloo, shortly after the shooting. Police have appealed to anyone who saw anything suspicious in that area to contact them.