PORTLAND, Ore. (AP) – A grand jury has determined two Oregon police officers were justified in fatally shooting a man who was holding a woman at knifepoint.

Portland Police Bureau Sgt. James Mooney and Officer Michael Gonzalez killed 42-year-old Jeb Collin Brock on April 29.

The Multnomah County District Attorney’s Office says the grand jury determined the deadly force was “a lawful act of self-defense and/or defense of a third person.”

Authorities say a third officer used non lethal force against Brock when police responded to a report of a stabbing at a Portland home.

Police say four stabbing victims were transported to a hospital.

A 1-year-old child who was in the room during the shooting was later reunited with the mother.

Investigators have not revealed a motive for the stabbings.