Conrado Virgen Mendoza, 34, left, of Chowchilla, and Ana Leyde Cervantes, 30, of Newman, and were arrested Friday in connection with the death of a Newman police corporal, authorities say. (Stanislaus County Sherriff's Department)

Authorities said Friday they'd taken two more people into custody in connection with this week's shooting death of a California police officer, bringing the total number of suspects arrested to eight. The pair were identified as a girlfriend and brother of the suspected gunman.

Investigators also may have recovered the murder weapon, the Sacramento Bee reported.