A Democratic mayor and former police boss was charged with drug possession after a brief pursuit Monday, authorities said.

Massena Mayor Timothy Currier, a Democrat and the former 26-year city chief of police, allegedly hurled one gram of crack cocaine out of his car window as detectives pursued him in connection to an undercover narcotics sting, according to a press release from the St. Lawrence County Sheriff’s Office. Deputies said Currier took law enforcement on a chase through a third of a mile in the local town before he pulled over, the department wrote.

The mayor was charged with criminal possession of a controlled substance, felonious tampering with physical evidence and failure to comply with a police officer, according to the release.

The St. Lawrence County Sheriff’s Office, Homeland Security and the St. Lawrence County District Attorney are working in a joint investigation into the drug operation, the release read. The case remains ongoing, according to the release.