A Medford man was arrested in Chelsea Tuesday night on outstanding charges stemming from allegedly injuring a police officer, according to state police.

State Police had previously tried previously to arrest Michael Ritson, 31, but were unsuccessful as he fled on a motorcycle, according to a State Police press release.

Ritson faced three outstanding charges, including unarmed robbery, stemming from an incident in June that left a Milton police officer with a broken hand, police said.

State police received information the Ritson was in Chelsea and successfully found him there about 11:30 p.m. Tuesday without incident, according to the release.