A Calgary police officer shoot and killed a pit bull in the community of Dover early Thursday morning.

Someone in a home on Dovertree Place S.E. called 911.

When two police officers arrived at the front door the woman who opened the door was holding on to the dog by the collar.

However, the dog got away and lunged at one of the officers and that's when the officer shot the dog.

The officer, who was attacked by the pit bull, received minor injuries.

The body of the dog was removed several hours later from the home.

Officers arrested one man who was wanted on warrants.

The incident is currently being investigated.

It turns out that there was no obvious emergency at the home and no apparent reason for the 911 call.