A homeless man allegedly bit off a portion of a Los Angeles police officer’s finger during an arrest at a subway station in East Hollywood on Thursday.

LAPD officers assigned to the Metro Red Line were conducting routine activities at the Vermont/Santa Monica station when they spotted a man reportedly board the train with a meth pipe around 10:15 a.m., KTLA reports.

Police approached the suspect and escorted him off the train for a narcotics investigation. As the man was being held, he became violent and began fighting with officers which resulted in a use-of-force incident.

During the incident, the suspect bit off a portion of a sergeant’s pinky finger, said LAPD. Witnesses said the man also tried to bite other nearby cops before he was subdued.

The sergeant was transported to a local hospital for treatment. Unfortunately, doctors confirmed they were not able to reattach the officer’s fingertip. The suspect was also transported to the hospital with minor injuries.

The suspect was arrested on charges of mayhem and resisting an executive order. His identity has not been released, although police confirmed he is a transient.