A Canadian city that was recently evacuated due to the threat of wildfires has been overrun by bears that swooped in to feed on the trash left behind when people abandoned their homes.

On Aug. 16, Yellowknife in Canada's Northwest Territories was evacuated as wildfires blazed through much of the surrounding area and came to within about 9 miles (15 kilometers) of the city's border. Around 95% of Yellowknife's roughly 20,000 residents left the city, while some key workers stayed behind, CBC News reported.

Around a week after Yellowknife was evacuated, those who remained noticed an unusual number of black bears (Ursus americanus) wandering the streets, CTV News reported. Since then, the number of bear sightings has steadily increased, but there are no official statistics for how many bears are now in the city.

Video footage shared by BBC News shows bears exploring people's gardens, walking in the road, rummaging through landfill and chasing a man into a hotel.

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The bears are likely being drawn to the city because most people left their trash cans full of waste, meaning there's lots of free food for the bears to eat, James Williams, a Northwest Territory wildlife officer who has been patrolling the city in search of the bears, told CTV News. However, the wildfires have also likely played a role in "pushing the bears" away from their natural territories and toward Yellowknife, he added.

The number of bears sighted in Yellowknife normally increases around this time of year. Earlier in August, two bears were shot and killed by wildlife officers in Yellowknife after posing a risk to residents' safety, after one of them tried to break into a house. And around the same time last year, people were warned to stay off trails around the city after residents encountered a number of bears, some of which showed little to no fear toward humans.

Wildfires may change how wildlife officers deal with the bears. Normally, officers use deterrents, such as bear spray and rubber bullets, to scare the bears out of town. When that fails, bears are captured and released far outside the city. But the wildfires will make it harder to release the bears back into the wild, Williams said. As a result, there is a chance that more bears may have to be euthanized.

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"Our number one priority is to protect life and property of the people and city of Yellowknife and as a territory as a whole, and when it comes down to it, sometimes we do have to dispatch some of these animals," Williams said. But if they do end up having to kill some of the bears, it will be "in a most respectful way as possible," he added.