A man was seriously injured in an attack following the Championship clash between QPR and Luton on Friday night.
The Metropolitan Police confirmed that officers came across the individual on Uxbridge Road in west London at around 9.50pm, with the man having suffered a serious head injury.
The 52-year-old, who is from the Luton area, was subsequently rushed to hospital and remains in a life-threatening condition.
Enquiries are ongoing to discover how the injury was suffered, although officers believe he may have been assaulted or caught up in disorder.
Detective Constable Arrash Fagihi said: “This man sustained a serious head injury, and it is vital that we make contact with witnesses quickly. The area was extremely busy after the match and there will undoubtedly be many people with information that will assist police.
“I need them to get in touch as detectives work to build a complete picture of what happened on Friday night.”
QPR CEO Lee Hoos added: “We are working proactively with the Met Police to do all we can to assist them in their efforts to understand what happened.
“We strongly condemn acts of violence in the name of football. If anyone has any information, we need you to come forward.”
No arrests have yet been made, but witnesses are being urged to come forward, with anyone with mobile phone footage or images that may be relevant told to contact police.
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The incident occurred as QPR earned all three points, beating the Hatters 2-0 at the Kiyan Prince Foundation Stadium.
Goals from Chris Willock and Charlie Austin moved the Rs into the Championship play-off mix, moving into sixth ahead of the rest of the weekend’s action.
Meanwhile, Luton remain in the bottom half having lost three of their last four league matches either side of the international break.