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Police investigating white substance mailed to Gates Foundation building in Interbay

Police are investigating a suspicious package in Interbay Tuesday afternoon, according to the Seattle Police Department.

The package was reportedly an envelope with a white powdery substance, mailed to a building in the 1400 block of Elliott Avenue West at about 12:30 p.m. That building is where the Bill and Melinda Gates Foundation processes its mail.

Around 1:35 p.m., the substance was determined to not be hazardous after being tested by hazmat crews. It has been sent to the FBI for additional testing.

One person was treated as the scene and is in “satisfactory condition,” according to Seattle Fire.