Officers were trying to make contact with people inside a home in the Fryelands neighborhood around 9 p.m.
By 10 p.m., they determined no one was there.
Officers remained on the scene pending a search warrant.
“We do believe there are weapons inside the home,” Monroe police spokeswoman Debbie Willis said. “We have attempted to make contact but so far they are not responding.”
Police received a report around 5:40 p.m. about a possible exchange of gunfire between a passing car and people inside the home in the 154th Street block of Esther Avenue, Willis said.
“We are still trying to sort it all out,” she said.
There were no reported injuries.
Willis said she had no idea how many suspects might have been involved or about a motive.
Off-duty police officers were called in to help with containment.
More Local News Headlines
Rescuers at ice caves after another reported collapse 7:33 p.m. Options considered to restore grizzly bear population to county Everett schools expand summer reading program Feds approve PUD's two small hydroelectricity projects Mukilteo ferry terminal construction crews begin asbestos removal School bus barn work begins on 15-acre spot in Lynnwood WWII veteran from Arlington reflects on his fight for freedom Video captures collapse at Big Four Ice Caves near Verlot
Our new comment system is not supported in IE 7. Please upgrade your browser here.