FORT ST. JOHN, B.C. -- It sounds like a horror movie -- two dogs get into a home and attack the man and woman inside.

But that's what happened to a couple in Fort St. John, B.C., on Christmas Day, say RCMP.

RCMP Cpl. Dave Tyreman said a frantic woman called 911 around 8 p.m. last Friday reporting that two dogs had killed her cat and were trying to kill her and her husband.

The call ended suddenly, and when officers arrived at the home, they found blood smeared on the outside of the door.

Inside, the officers found a 51-year-old woman suffering from dog bites and a 66-year-old man sitting unresponsive in a chair, appearing to be in shock, while being attacked by the dogs, Tyreman said.

"So at that time, you know, (the officers) tried everything that they could to distract the dogs, to draw their attention away, but they still kept attacking this man," said Tyreman.

"At that point they felt they had no other alternative but to use lethal force."

He said an officer shot one dog, but the other managed to escape with serious injuries, although it was later tracked down and "humanely put down."

The woman was taken to a local hospital for treatment and the man was airlifted outside the city for medical care, said Tyreman.

Tyreman would not say what breed the animals were.

Police are determining how many shots had been fired inside the home and at the dogs.

"It's almost like something out of a movie where you just don't expect it," he said.

"We believe we know who the owner is, it's just a matter to find out how these dogs got loose and how they got into this residence."