NEWPORT BEACH, California (AP) — Four people have been charged with torturing a California marijuana dispensary owner during a robbery and cutting off his penis.

Authorities say a man and woman were arrested Friday in Fresno — a day after the FBI arrested another man in Europe. A fourth man was arrested last year.

They are charged with mayhem and could face life in prison if convicted.

Prosecutors say the four — including a grower that supplied the dispensary — planned to rob the owner because they mistakenly believed he'd buried cash in the California desert.

Authorities say the robbers kidnapped the man and his roommate's girlfriend in Newport Beach last year, drove them to the desert, tortured the man, severed his penis and took it away so it couldn't be reattached.

He survived.