The family dog was also found dead early Monday.
Kapp identified the dead Monday evening as Danny Lee Luster and his wife Sandra Luster, both 49.
The Oregonian reports that neighbors said Danny Luster had recently been laid off.
Neighbors called 911 at 5:20 a.m. reporting shouts, screams and gunfire.
A 15-year-old neighbor, Sayge Sword, told The Columbian she awoke to a male voice screaming, “How could you do this?”
Police Lt. Kathy McNicholas said no suspect is at large and there is no public threat.
More Northwest Headlines
1 dead, 2 injured in drive-by shooting in Federal Way Tacoma recycling company fined again for toxic spill 1:09 p.m. State fines Seattle terminal operator for health, safety violations 1:08 p.m. Washington cranberry growers anxious for fall rain at harvest 1:07 p.m. $500,000 bail set for man accused of Blaine shooting 1:05 p.m. King County sheriff’s deputy to be fired for sleeping on job 1:04 p.m. Hearing Friday on suit over Kurt Cobain death-scene photos 1:02 p.m. Tacoma lighthouse coming down because of structural problems 1:06 p.m.
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