Court records show Mari Bonnici alleged her ex-partner, Deputy Jeremy Lyle, had a history of abuse weeks before he fatally shot her and then himself.

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.

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.