A man who is believed to have lived with his mother's rotting corpse for months has been charged with her murder.

John Waszynski, from Connecticut, is accused of killing 86-year-old Krystyna.

His brother went to the police when Waszynski refused to let him into the house, and asked officers to conduct a welfare check on his mother.

When officers arrived, they found a woman's body which was so badly decomposed that it took days to identify.

A post mortem examination found Krystyna had suffered "neck compression and blunt trauma of the upper extremity".

Police chief James Cetran said he believed Waszynski had been living with his mother's body "for some time".

He added that police had previously been called to the address after reports of a man walking around naked outside, but no arrests had been made.

Neighbours said they had had little contact with Waszynski.

Kimberly Robinson, a resident on the street for 10 years, said: "I never even knew a woman lived there. I never saw her once.

"But everyone thought he was strange. You just got a creepy feeling from him."

Neighbour Joy Pace told the Hartford Courant that she had been informed by police that the body had been decomposing in the home for at least two months.

Pace's father said that he had seen the elderly Waszynski when he had helped fit an air conditioner some months previously, and she had looked "frail."

John Waszynski inherited the house from his father - Krystyna Waszynski's late husband - in 2006, after the man's death in 2005.

According to a 2005 obituary in the Courant, Julian Waszynski - who'd owned the home since 1965 - was an immigrant who survived the Nazi concentration camp at Auschwitz before moving to America.

John Waszynski has had previous run-ins with law enforcement, including a 1999 assault charge, for which he was sentenced to two years' probation.

Waszynski was booked on charges of murder and cruelty to persons. He's being held on $1 million bail for the murder charge and an additional $5,000 for the cruelty count.