Police say a murder victim might have been involved in an argument with three men shortly before his death in Merseyside.
It is thought the 33-year-old man was stabbed following the row in Aintree late on Tuesday.
Police were called to Melling Avenue, near Aintree Racecourse at 11.53pm, after reports of a man lying unconscious in the road.
Paramedics treated him at the scene before he was taken to University Hospital in Aintree where he was pronounced dead.
Merseyside Police say they are treating the death as murder and believe the argument culminated in the local man being assaulted. They believe it was a targeted attack and that the victim might have been known to his attackers.
House-to-house inquiries are under way and the immediate area has been cordoned off while forensic examinations take place.
Detective Chief Inspector Andy O'Connor said:
– Detective Chief Inspector Andy O'Connor
"This is a deeply shocking thing to happen in this community and I would like to reassure every resident that we are doing everything in our power to catch the person or persons responsible.
"A man has lost his life in violent circumstances and it is imperative that the offenders are brought to justice.
"The investigation is still in its infancy and at this stage we do not have a motive for the attack but we do believe that the victim was targeted and could possibly have known the offenders.
"Extensive inquiries are being carried out to piece together what has led to this man's death and I am calling on the local community to help. If you saw or heard anything in Melling Avenue shortly before midnight that could help our investigation, please come forward. Your information, however small or insignificant it may seem, could be vital for us and could lead to the apprehension of those responsible."
The victim's next of kin have been informed.
A post-mortem examination will be carried out later.