According to local news outlet KOMO, police were searching the building on Friday afternoon after a man who was escorted from the building made a bomb threat outside. The man is in custody and the King County Sherriff's Office said the building had been closed for the day and public services postponed.
About an hour later, the courthouse announced on its Twitter account that the Seattle Police Department had completed its search and cleared the building and were allowing occupants to return.
One of the outlet's photojournalists posted images on Twitter of a large police presence around the courthouse and road blockades keeping evacuated courthouse employees and the public away from the building. According to police, about 75 people were evacuated.
The 14-floor courthouse was built in 1916 and is located in downtown Seattle.