A police officer crawled across a thinly frozen lake to rescue two fishermen and a dog who had fallen through.

Body-camera footage shows Deputy Chris Fjeld crawling across the ice to rescue the three.

The heroic deputy was able to rescue the two men and the dog using a rope, which was tied around his waist.

The men were fishing on a lake in Nowthen, Minnesota, USA on December 5th when they fell through the ice.

Fjeld and Deputy Curt Grabmeie were first on the scene and decided they couldn't wait for backup.

Anoka County Sheriff’s Office’s Marine Unit equipment and resources were on their way but could not be there immediately.

As such, Fjeld decided to go out to rescue the men and their pet, who had become hypothermic.

Both men, the dog and Deputy Fjeld were able to make it safely to shore and the men were transported to a nearby hospital.

The Sheriff's Office said: "Noticing the males were showing signs of hypothermia, Deputy Fjeld made the decision to begin the rescue before the Anoka County Sheriff’s Office’s Marine Unit equipment and resources arrived.

"With support from the other responders on the scene, both males, the dog, and Deputy Fjeld were able to get off the water.

"We are thankful all involved are ok and are proud of Deputy Fjeld’s selfless actions to help others in need."