Margaret Briers died in hospital after the robbery
A pensioner has died after a man posing as a police officer forced his way into her Merseyside home.
Margaret Briers, 82, of St Helens, suffered a broken hip in the attack which, police say, was directly attributable to her death a week later.
A man claiming to be a police officer forced his way into Mrs Briers' home by pushing her over and then threatened her and demanded money.
Supt Peter Edge, of Merseyside police, said it was "a despicable crime".
"The manslaughter of Margaret Briers will be investigated with the same rigour and discipline as a murder inquiry," he said.
Mrs Briers was targeted on 30 March at her home in Caldbeck Grove.
Police have issued an e-fit of the man who targeted Mrs Briers
The man searched her house, and took a small amount of cash, which was in a tin with a pattern of a £20 note on it.
Police said the tin may have been discarded and they are urging anyone with information about it to contact officers.
Mrs Briers was found a few hours later by a relative and died in hospital from a chest infection.
The robber is described as white, in his mid 30s and 5ft 8in to 5ft 10in tall with a slim build. He had short brown hair and was clean shaven, with sharp features.
The man was wearing a navy blue peaked cap, a coat which was buttoned up and dirty-looking brown shoes and gloves.
A man from St Helens has been arrested by police and released on bail.