Forensic teams have been searching an area of Wisbech after an 86 year old woman was murdered in her home.
Una Crown's body was found at her bungalow on Sunday morning.
Detectives were originally unsure how she died but a post mortem has now revealed that she'd been assaulted.
Officers are appealing for anyone with information about the attack to contact them.
A murder investigation is underway in Wisbech after an elderly woman was found dead in her home.
Una Crown, 86, was discovered in her bungalow in Magazine Lane shortly after 11am on Sunday 13th January.
Her death was initially treated as unexplained, however a post mortem examination carried out at Peterborough City Hospital on Tuesday night confirmed she'd died as a result of an assault.
Detective Chief Inspector Jon Hutchinson said: "Mrs Crown died as a result of a brutal assault in her own home.
"Our investigation is still at a very early stage and we are trying to build up a picture of the events that lead to her death.
"She was last seen on Friday morning so I am keen to hear from anyone who who was in the area of Magazine Lane over the weekend and saw anything suspicious.