by David Krough

Posted on March 30, 2010 at 4:11 PM
Updated yesterday at 5:22 PM

PORTLAND, Ore. -- Someone vandalized the Portland Police union headquarters doing thousands of dollars in damage early Tuesday.

Spokesman Scott Westerman said just before 1 a.m., bricks and rocks were thrown through their windows, doing about $20,000 worth of damage to the outside and inside of the building.

Eight people were arrested and three officers were injured Monday night when protesters clashed with police in downtown Portland in a rally against two recent officer-involved shootings. DETAILS: Police protests

Westerman said computers and other items were damaged inside the office.

No suspects have been named in the case.