Police have arrested a man suspected in a mobile home fire that killed four people in Washington state. Matthew Timothy Wetherington was charged with four counts of first-degree murder and one count of arson. The 34-year-old was booked into jail Saturday night. It wasn’t immediately clear if he had an attorney who could comment on his behalf. The bodies were found inside a trailer at a mobile home park in Port Angeles, a coastal gateway to Olympic National Park, but they haven’t been identified yet. Four family members lived in the trailer and haven’t been seen since the fire early Saturday: 34-year-old Valerie Kambeitz and her three young children. Port Angeles Deputy Police Chief Jason Viada said investigators believe Wetherington also lived in the trailer and was married to Kambeitz.