Boyfriend Sought in Slaying of Woman

Police are searching for a man who allegedly stabbed his girlfriend to death, injured a man who came to her aid, and fled with his 3-year-old son Tuesday.

Police did not release the 28-year-old woman’s name because her family had not been notified. The toddler was found unharmed at his grandmother’s house in Chino.

Investigators say that about 1 p.m., Jose Mario Armendariz, 32, stabbed the woman outside the apartment they shared in the 800 block of Reeves Place. He chased her across the street and she collapsed on a stairway, Sgt. Paul Capraro said.

The second victim, an unidentified 47-year-old Pomona man, was stabbed in the chest. He was airlifted to Harbor-UCLA Medical Center in Torrance, Pomona Sgt. Joann Crabb said. He was in intensive care with a punctured lung Tuesday night, but his injuries are not life-threatening, officials said.

Armendariz took his son and drove off in a car that was found abandoned less than an hour later in a residential area of Ontario, Crabb said. The boy’s mother was taken to Pomona Valley Hospital Medical Center, where she was pronounced dead, Crabb said.

At the crime scene, officers found a knife that they believe is the murder weapon, Crabb said.

Police had been called out to previous domestic disputes at the residence, Crabb said.

Neighbor Guillermo Vigil said he called 911 and was the second person on the scene to assist the woman. When he rolled her over, she had old bruises around her eyes, he said.

Armendariz is 5 feet 9, 175 pounds, with dark brown hair and brown eyes.

Anyone with information is asked to contact the Pomona Police Department at (909) 620-2095.