An 81-year-old woman has died weeks after being attacked in a street.
Lesley Davies was attacked in her home town of Par, Cornwall on 19 July and police said they were treating her death as murder.
She suffered life-threatening head injuries and died early on Saturday at Derriford Hospital, Plymouth.
A 69-year-old man was arrested on suspicion of attempted murder. He was sectioned under the Mental Health Act.
Det Insp Ian Ringrose, from Devon and Cornwall Police, urged anyone with information to come forward.
He said: "There were a number of people in the area at the time of this incident.
"I would ask anyone who witnessed the incident, or the events before and after, to contact the police if they haven't spoken to us yet."