VALLEJO -- A Vallejo man convicted of murder more than 40 years ago was arrested Wednesday for killing his mother at his home, police said late Wednesday.

Police said that Dennis Stanworth, 70, called the Vallejo Police Communications Center about 11:55 a.m. Wednesday and claimed to have killed his own mother, according to a police news release.

It is Vallejo's first reported murder of 2013.

Officers responded to Stanworth's home in the 2500 block of Marshfield Road in Hiddenbrooke where he directed them to an area on the property where they discovered the deceased victim.

A search warrant was obtained for the residence and a subsequent search revealed evidence of the crime.

Detectives interviewed Stanworth and later arrested him on a single count of murder. The cause of death was not revealed.

Although police said that confirmation is still pending, the woman discovered at the property is believed to be Stanworth's mother, Nellie Turner Stanworth, 89.

The suspect has a long and violent criminal history, police said. Most notable are his two murder convictions in the mid 1960s for which he pleaded guilty and was sentenced to death in 1966.

During this crime, he kidnapped, sexually assaulted and shot to death two teenage girls, ages 15 and 14, in Contra Costa County.

His sentence was later reversed and he was given a life sentence. He was later paroled and required to register with the Vallejo Police Department as a sex offender.


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Stanworth was a house painter in Pinole at the time of the alleged murders.

He had reportedly attempted suicide three times since confessing to the dual killings, according to a December 1966 Times-Herald story.

Police said Wednesday night they would release no additional details until later Thursday.