A "very suspicious" house fire near North Bend, Wash., that killed two women on Sunday is being investigated as a homicide, according to officials.

The King County Sheriff's office is looking for 41-year-old Peter Keller, the male resident of the home, as a person of interest in the case. A car missing from the scene was found hours later at the North Bend library.

While police have not released the identities of the victims, neighbors told ABCNews.com that a man and woman lived in the home along with their teenage daughter. Police have not released the names of the victims.

The fatal blaze was reported early Sunday morning by a neighbor. Firefighters found the two women unconscious in the home. Although responders attempted to revive the victims with CPR, they were unresponsive.

Firefighting officials became suspicious about the cause of the fire after finding seven gas canisters on the scene, which led to the deployment of a bomb detection robot. Although firefighters had to break down the front door because furniture was blocking the entrance, King County Sheriff's Office spokesperson, Cindi Wright, said they now believe that the furniture was arraigned normally and the family commonly used the side entrance to enter the home.

The deadly fire has shocked neighbors and friends. Cathleen Reynolds told ABCNews.com that her daughter and one of the victims were friends and had recently graduated from high school together.

"It's just something you watch on CSI or something," Reynolds told ABCNews.com. "You just don't ever think it could happen to someone you know."