A man has been found at his home in Stowmarket with head injuries.
Police were called to an address in Gainsborough Road in the town yesterday evening after a friend grew concerned that he hadn't seen the man for a few days.
The man was found conscious but incoherent at the house and is now being treated at the West Suffolk Hospital.
Police are treating the incident as unexplained but have cordoned off the house to carry out further investigations.
Anyone with information is asked to contact Suffolk Police on 101.