Chief Mark Hathaway, a 25-year veteran officer and current chief of the Bangor, Maine police, was cleaning his newly issued weapon Monday when he unintentionally discharged the gun.
According to a statement from the city, "At approximately 5:15 p.m., while officers were cleaning their new guns at the Bangor police station, Chief Mark Hathaway sustained a non-life threatening injury to his left hand in what appears to be an accidental discharge of his duty weapon."
Hathaway was taken to the local hospital where he was treated and released.
The department had just replaced the police firearms with .45-caliber semiautomatic Glock handguns.
"There are different mechanisms in the gun that is for sure," said a police spokesperson.