Eastside Fire and Rescue responded to a house fire in Sammamish around 7:50 p.m. Saturday.
The back of the house in the 21400 block of Southeast Fifth Place was reportedly fully engulfed in flames. Eastside Fire and Rescue Captain Steve Westlake said part of the roof collapsed.
No injuries have been reported. It is unknown if the residents were home.
Redmond and Bellevue Fire Departments also responded.