TV station KIRO reported it is being treated as a mass casualty incident, but there is no word on injuries at this time.
Health leaders say they are alarmed about reports that officials at the nation's top public health agency are being told not to use certain words in official budget documents, including "fetus," and "transgender.".
The Republican president will detail his plans Monday, which could sharply alter the United States' relationships with the rest of the world.
President Trump is poised to bask in the triumph of his first major legislative victory with the likely passage of tax legislation this week.
"Net neutrality" regulations, designed to prevent internet service providers like Verizon, AT&T, Comcast and Charter from favoring some sites and apps over others, are on the chopping block.