Police are asking for help after a man who was found unresponsive on a pavement following a row in a taxi has since died.
Jake Carroll, from Southport, was found with a head injury by emergency services in Preston New Road, Little Plumpton, in the early hours of Sunday.
The 30-year-old was taken to hospital and died on Friday evening, Lancashire Police said.
A 27-year-old man from Wesham, who was arrested on suspicion of assault, has been released on conditional bail.
Det Con Insp Andy Fallows said: "We know Jake was in a taxi where an altercation took place, resulting in the deceased and others being asked to leave the vehicle.
"However, I need to establish exactly what happened after the taxi left the area."
'Isolated incident'
He appealed for people who had been in the locality to contact police.
"My job now is to establish the exact circumstances of how Jake came to be unresponsive on the pavement.
"Although we have made an arrest and this is very much being treated as an isolated incident, our inquiries are very much ongoing and I need the public's help."
A post-mortem examination to establish the cause of Mr Carroll's death is due to take place.
Det Con Insp Fallows added: "First and foremost, my thoughts are very much with Jake's loved ones at this distressing time.
"They have asked for their privacy to be respected as they come to terms with this unexpected loss."
