Authorities have shot and killed a suspect during a marijuana eradication operation in Northern California.

A Santa Clara County sheriff's spokesman says deputies from Santa Clara and Alameda counties were combing a rugged and remote area looking for marijuana gardens when a suspect was fatally shot around 11 a.m. Wednesday.

It's not clear what prompted deputies to open fire. None of the officers was injured.

Authorities have not released any information concerning the suspect or details about the search.