'Not peaceful protests': 12 officers injured in Seattle riots Sunday

Cleanup continues after destructive demonstration in Seattle

Businesses cleanup after demonstrators target Seattle buildings during Sunday's march.

SEATTLE - A large group of protesters marching through downtown Seattle Sunday afternoon reportedly threw rocks, bottles and firecrackers at police, injuring 12 officers.

Police say a peaceful protest started about 10:30 a.m. Sunday, but three hours later, a second group showed up carrying baseball bats. The second group began marching on Fifth Avenue, breaking windows and tagging buildings with paint along the way.

They vandalized SPD headquarters and Seattle Municipal Court before targeting downtown businesses and marching to the West Precinct, where they tried to break in but were thwarted by officers. Someone or a group threw large fireworks at police, injuring multiple officers and sending one to the hospital.

Windows of Starbuck Roastery busted during destructive march through downtown and Capitol Hill Sunday afternoon (Q13 News photo)

Police used pepper spray and blast balls to stop the assault on officers and arrested two people near the West Precinct.

From there, the group went to Capitol Hill for more looting and property damage, police said. They set a small fire inside a business, as well as inside the East Precinct where windows had been smashed.

The group - which police called organized and intent on causing property damage - eventually broke up at Cal Anderson Park.

"These are criminal acts, not peaceful protests," SPD said on Twitter.