Last Sunday (July 17) at around 4.40am, a man was discovered lying in Midland Road with head injuries.
Police are appealing for information about the incident in Bedford.
The victim was not seriously injured but is not able to recall what happened.
Investigation officer Julia Hinson, said: “This is an unusual incident in which a man was found with wounds to his head, but we have not been able to piece together the exact circumstances surrounding the cause. It could be that he fell, but there is a possibility he could have been attacked or robbed, and we’re appealing for anyone who was in the area at the time and witnessed a possible altercation or suspicious incident to come forward.”
Call IO Hinson on 101 with any information.