State corrections officials have launched a homicide investigation after a convicted killer from Alameda County died following an incident at a Central Valley prison Thursday evening.

The death of a man at San Quentin Rehabilitation Center this week is being investigated as a homicide, officials said Wednesday. Correctional officers at the Marin County facility responded to the cell of incarcerated individuals Mark Squires and Gustavo Lopez at 3:30 p.

Authorities with the California Department of Corrections and Rehabilitation are investigating the death of an incarcerated person at San Quentin Rehabilitation Center earlier this week as a homicide,

A convicted child molester was found dead inside his cell on Tuesday at San Quentin state prison in Marin County. Inmate Mark Squires’ death is being investigated as a homicide, California Department of Corrections and Rehabilitation officials said.

Officials at San Quentin State Penitentiary are investigating the death of a 70-year-old inmate inside his cell as homicide, the California Department of Corrections and Rehabilitation announced Wednesday.