TRENTON, New Jersey: A man suspected of fatally shooting three family members in their Philadelphia-area homes Saturday was arrested in New Jersey after evading law enforcement for hours as police mobilized across two states, shutting down a parade and an amusement park and ordering some residents to stay in their homes.

Steve Wilson, police director for the city of Trenton, New Jersey, said the man was arrested near a house where officers had believed he was barricaded inside. He apparently left the home before the police cordon was erected, Wilson said.