SANTA CRUZ, Calif.—Authorities are trying to determine what killed an inmate at the Santa Cruz County Jail this week—the third such death in four months.

The Santa Cruz Sentinel says the 47-year-old man was found in his bunk bed on Tuesday evening. CPR was performed but he was declared dead a short time later.

He'd been arrested three days earlier for a probation violation. Authorities say no foul play's suspected.

Sheriff's Lt. Shea Johnson says the inmate told jail staff he was having drug withdrawal symptoms and was on a "detox protocol" that included extra medical attention.

In August, a 27-year-old woman died in the jail from medical problems attributed to heroin abuse.

In October, a 59-year-old man collapsed during booking and died of cardiovascular disease.


Information from: Santa Cruz Sentinel,