BBCAn 84-year-old man has died more than a month after being attacked by an XL bully dog.
He suffered serious injuries when he was attacked while walking home in Warrington on 24 February, Cheshire Police said.
The force said he died in hospital on Sunday and his relatives were being supported by specialist officers.
Sean Garner, 30, from Liverpool, has previously been charged with being the owner of a dangerously out of control dog, causing serious injury and possession of a fighting dog over the incident.
The Crown Prosecution Service was now considering whether any changes should be made to the charges, police said.
Det Insp Simon Mills said the 84-year-old had died from his injuries.
"To endure such pain and anguish at the hands of an animal is unimaginable," he said.
"And I cannot begin to comprehend the distress that his family are currently suffering following such an horrific incident."
