An off-duty Sonoma County Sheriff's deputy fatally shot the mother of his three children at her apartment over the weekend and later killed himself in the parking lot of the coroner's office, Santa Rosa police said.

A Sonoma County Sheriff's deputy allegedly killed the mother of his three children before fatally shooting himself during a standoff with police and deputies on Monday morning.

A Sonoma County Sheriff’s Office deputy who allegedly killed his former partner died of a self-inflicted gunshot following a standoff with law enforcement Sunday. Deputy Jeremy Lyle was off duty when he fatally shot his former partner,