An internal investigation has been launched after a Yellowknife officer shot and injured an "aggressive" dog on Wednesday, say police.

The Mountie "discharged his firearm" at the dog around 11:30 a.m. Wednesday morning, according to a news release issued by police late Wednesday afternoon.

The dog was injured and taken to a local veterinarian for treatment, stated spokesperson Marie York-Condon. There's no word yet on the current state of the injured animal.

Multiple officers were involved in the incident, wrote York-Condon. None of them sustained injuries.

No details have been released about the location of the shooting or the circumstances surrounding it.

The early stages of an in-house investigation are now underway, say police.

Yellowknife General Investigative Services, NWT Forensic Services and additional police officers are assisting with the investigation.