MILPITAS (CBS SF) – A 51-year-old man died while in custody at the Elmwood Correctional Facility in Milpitas Friday morning, a Santa Clara County sheriff’s spokesman said.

A correctional deputy found the inmate in his cell and unresponsive at about 8:20 a.m. at the facility located at 701 S. Abel St., sheriff’s Sgt. James Jensen said.

READ MORE: Berkeley to Offer Vegan Meals at Public Events, Buildings

Soon after the discovery, jail staff performed first aid and CPR on the inmate, Jensen said.

Emergency medical crews transported the man to a hospital where he was pronounced dead about an hour later, according to Jensen.

READ MORE: Vegetation Fire Shuts Down Hwy 146, Prompts Evacuation of Pinnacles National Park In Monterey County

Sheriff’s officials have deployed detectives and informed the county district attorney’s and medical examiner’s offices of the death, Jensen said.

The man’s name has not been released until his next of kin has been notified, the spokesman said.

MORE NEWS: South Bay Surfer Helping To Clean Up Beaches In Half Moon Bay, South Africa

© Copyright 2015 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.