A British man suspected of killing his wife and mother-in-law with a kitchen knife at their central California home has been arrested after four days on the run.

Clovis Police Chief Matt Basgall said investigators took Dave Thomas McCann into custody at a homeless camp early Wednesday in the coastal town of Seaside, 150 miles from the crime scene.

Basgall says a tip from a homeless person led them to McCann.

Cortney Rider tells KFSN-TV in Fresno (http://abc30.tv/1NqGmJy ) that she was at the home Saturday when McCann kicked down the door and attacked his wife, Tierney Cooper McCann, and her mother, Judith Cooper.

She says she saw McCann slit her sister's throat and he threatened to kill her before she escaped.

Police say McCann is living in the U.S. on a green card.