Phoenix: A Phoenix man has been arrested on suspicion of killing his wife, two of his young daughters and a man who the suspect thought was romantically involved with his wife, police have said.

Austin Smith was booked on suspicion of four counts of first-degree murder, two counts of attempted first-degree murder and three counts of aggravated assault, Sgt. Tommy Thompson said on Friday. Smith was arrested Thursday evening as he drove from an apartment complex where officers had responded to a shooting.