By KOMO News (RVP news partner)
A police bomb squad and fire department hazardous materials team have cordoned off a house in [Columbia City] while they investigate suspicious materials found inside.
Police spokesman Jeff Kappel said officers were called to the scene at 3217 South Edmunds Street by a cleaning crew just before 1 p.m.
The crew became sick while cleaning the abandoned house on Friday, but did not report the problem until Monday afternoon, Kappel said.
Officials have not said what was found inside or exactly why the bomb squad was on the scene.
Members of the Seattle Police Department SWAT team were also at the house to provide security, officials said.
This is a developing story. More information will be posted as it becomes available.