One of three men hit by a car in Brighton early on Sunday has died.
The 20-year-old from Crawley suffered head injuries when he and two others were hit by a BMW X6 following a fight in Marine Parade, at about 05:20 GMT.
A murder inquiry has begun, Sussex Police said.
A man, 33, held on suspicion of attempted murder remains in custody. A 32-year-old man held on suspicion of causing grievous bodily harm has been released while inquiries continue.
The two other injured men, aged 18 and 22, are in a serious condition in hospital, police said.
Det Ch Insp Chris Friday, of Surrey and Sussex major crime team, said: “Our thoughts are with the family and friends of the victim who has sadly died and with those of the other two victims who are in serious condition in hospital.
“This is now a murder investigation and we are again appealing for anyone who may have seen the incident or has any information about it to come forward.
“We are particularly keen to hear from anyone who may have mobile phone footage, dashcam footage or anyone with private CCTV footage of the incident.
“Marine Parade is likely to remain closed between the pier roundabout and Camelford Street until Tuesday afternoon (3 December) while we are continuing searches and carrying out enquiries and I would like to thank the public for their patience.”
Sussex Police confirmed the incident was not terror-related.