22 arrested during protest on Labor Day

SEATTLE — Twenty-two protesters were arrested on Labor Day for arson, assault, obstruction and failure to disperse after a large crowd marched from the International District to the Seattle Police Officers Guild building in SODO, police said.

A large crowd had gathered at Fourth Avenue South and blocked the northbound and southbound lanes at South Lander Street, the Seattle Department of Transportation reported.

Police said they arrested a number of rioters outside of the police union building because they refused to disperse after throwing rocks, bottles and homemade explosives at police.

The group continued toward Judkins Park, and police said most of the group broke up.

When the crowd moved north on Fourth Avenue South, someone threw a Molotov cocktail at officers, authorities said. It reportedly exploded on the road. No one was injured.

Police said they arrested five more people later at 14th Avenue South and Rainier Avenue South as officers attempted to impound a vehicle.

This is a developing story. Please check back for updates.