Updated

Corrections officials say two inmates have died in suspected homicides at separate California state prisons.

They reported Tuesday that the victims' cellmates are considered suspects in both recent deaths.

A 53-year-old inmate was found unresponsive in his cell Monday night at maximum-security California State Prison-Sacramento.

State officials did not release the inmate's name or other information because of the investigation. The victim was serving a life sentence for a Marin County murder.

On Friday, 46-year-old Miguel Alejo was found unresponsive in his cell at California Correctional Institution in Tehachapi. He was serving a six-year sentence from Fresno County for robbery and burglary.

No charges have been filed against the cellmates.

Department of Corrections and Rehabilitation spokeswoman Terry Thornton says officials do not suspect a connection between the two deaths.