Portland Police need your help identifying this man who sped off on his motorcycle.

Police tried to stop the man on Washington Avenue for an obscured license plate, but the took off and reached speed of more than 50 mph in 25 mph zones. The chase was called off because of the speed and amount of traffic and pedestrians, but they'd really like to identify this guy and pay him a visit.

He's described as riding a  blue Harley Davidson sportster, while wearing blue jeans, tan boots, a black backpack and tan face mask. Police believe he has dark hair and a tattoo on his right arm.

If you can identify him, please contact the Portland Police Department at 207-624-7076 and ask for Trooper Flanagan.