A KING 5 reporter on the scene initially estimated about 1,000 people gathered at the Henry M. Jackson Federal Building in downtown Seattle.

A demonstration was blocking traffic in downtown Seattle, the Seattle Department of Transportation (SDOT) reported at 5 p.m. Monday. However, SDOT announced around 6:45 p.m. that demonstrators had cleared out. The gathering appeared to be an “ICE Out for Good” protest headed to the Federal Building, as posted online.

Drivers are urged to find alternate routes as aome Seattle roads are blocked to traffic due to an 'ICE Out Now" protest moving through parts of the downtown area on Saturday afternoon.

Hundreds are expected to hit the streets throughout Western Washington on Saturday for a number of protests against federal immigration tactics.

A protest erupted in downtown Seattle Saturday afternoon, an anti- ICE group blocked all southbound traffic on 2nd Ave at Madison St.

The traffic impacts came as hundreds of demonstrators marched through neighborhoods across the Seattle area earlier in the day.