Colchester stab victim James Attfield had '102 knife wounds'
A "shy and polite" man was stabbed 102 times in a "frenzied attack on a vulnerable man", police said.
James Attfield, 33, of East Bay, Colchester, had injuries to his head, upper body and hands when he was found in Castle Park early on Saturday.
He died at the scene and police are treating his death as murder.
Police said Mr Attfield, last seen at the town's River Lodge pub on Friday night, lived in sheltered accommodation because of a brain injury.
At a press conference in Chelmsford, police said no weapon had been found and no motive for the attack had been established.
Mr Attfield had impaired speech and reasoning skills as a result of a car crash four years ago.