A man is critically ill in hospital after being found unconscious outside Brighton Station in the early hours of this morning (Saturday 22 October).
Sussex Police is trying to find out what happened.
The force said: “Mystery surrounds how a man now critically ill in hospital came to be found collapsed unconscious outside Brighton railway station in the early hours of Saturday morning.
“The 47-year-old man, from Bognor Regis, was discovered by police officers outside Budgens Stores in Queen’s Road at 1.45am.
“He was unresponsive and not breathing and the officers immediately administered CPR.
“He was taken to the Royal Sussex County Hospital in Brighton where he remained on a ventilator and under sedation on Saturday afternoon.”
Detective Inspector Jason Hazzard said: “It is unclear at this time whether this is an unfortunate medical episode or whether something else happened to the man to cause him to become unconscious.
“We do know that he was at the station around 12.30am, having missed a train home.
“He did appear to be intoxicated and was seen to be sitting on a ledge by a nearby cash machine a short while later.
“CCTV shows him sitting there at 1.37am but he was discovered lying on the ground at the same place a few minutes later.
“He is white, with long dark hair believed to be in a ponytail and was wearing a Ghostbusters T-shirt with a dark jacket, blue jeans and white trainers.
“We want to know what happened during that period. If you were in the area and saw the man or have any information about the incident, please email 101@sussex.pnn.police.uk or call 101 quoting serial 101 of 22/10.”