Wetherington, who police say hasn't been seen since the fire, is a level III sex offender, according to the Washington Association of Sheriffs and Police Chiefs' online database.
Police couldn’t immediately clarify Wetherington’s relationship to the mother but Facebook posts and pictures indicate the two were married. Police don’t believe he is among the dead but said that could change during the investigation.
The fire was reported early Saturday at the Welcome Inn Trailer Park along Highway 101 in Port Angeles. Cellphone video shared with KIRO 7 showed massive flames, which police said spread to a second mobile home and several cars.
A man in the second mobile trailer escaped through a window, according to police.
"Sometime in the wee hours, I was sleeping. I heard a double pop, pop like fireworks,” said neighbor Nita Frantz, who called 911. "I was scared out of my mind because the breeze was blowing towards the east, and I just thought for sure one after another was going to go, like dominoes falling."
State and federal investigators have been called in to help with the investigation. Police have not yet said what caused the fire but have been working to connect with witnesses and anyone who recorded video of the fire.
"We'll go wherever the facts take us,” said Port Angeles Police Chief Brian Smith, who told KIRO 7 the coroner will identify the bodies and determine the exact cause of death for each. “Looks like small people, which indicates children, but again, that’s not definitive.”
Investigators want Wetherington and anyone who knows where he’s at or has been in contact with him to contact Port Angeles police at 360-452-4545.