(Portland, OR) -- Police are offering a cash reward for information regarding the homicide death of a 23-year-old anti-fascist activist in northeast Portland. The Portland Police Department says they're still looking for a motive in the slaying of Sean Kealiher just after midnight Saturday. Kealiher, also known as Armenio Lewis, died of blunt force trauma after being hit by an SUV outside of the Oregon Democratic Party building. Police say the SUV had Washington license plates as well as bullet holes in it. A witness tells police he heard multiple gunshots around the time of the crash.