BBCA woman who was seriously injured after being attacked while out walking her dog has died in hospital, police said.
Anita Rose, 59, was found unconscious in Brantham in Suffolk on Wednesday.
She died in Addenbrooke’s Hospital in Cambridge on Sunday morning.
Police said a man from the Ipswich area, who had already been arrested on suspicion of attempted murder, had now been re-arrested on suspicion of murder.
Ms Rose was found on the track between the railway line and a sewage works by a member of the public at about 06:25 BST on Wednesday.
It was believed she had left home at about 05:00 to walk her springer spaniel Bruce in the village on the River Stour estuary on the Essex-Suffolk border.
Police were called to the track off Rectory Lane by ambulance paramedics shortly after 08:00.
A 45-year-old man who has been re-arrested is still being questioned at Martlesham Heath Investigation Centre.
Suffolk Police said a a 37-year-old woman had also been arrested on Saturday on suspicion of handling stolen goods.
The force said Ms Rose’s mobile phone that had been missing had now been located and recovered.
The distinctive pink jacket that she was wearing was still missing.
Det Supt Mike Brown said Ms Rose’s family “continue to be supported by specially trained officers”.
“The investigation to establish the full circumstances surrounding the offence continues, as do inquiries to establish the cause of death,” he said.
“I can now confirm that the scene has been lifted on Rectory Lane.”
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