The bear population of 91原创 briefly increased by a third Sunday.

When the roof collapsed on a bear compound at South 91原创鈥檚 Critter Care facility late this afternoon, five young black bears made good their escape through a small hole that opened up, said B.C. conservation officer Jack Trudgian.

While four of the year-and-a-half-old bears stayed on the roof and were safely coaxed back into the shelter without incident, Trudgian said one bear made good its escape.

The black bear, originally captured last year in Port Coquitlam, was last seen heading south towards the U.S. border, he said.

As of Tuesday, there had been no reported sightings of the bear in South 91原创, and Trudgian believes he crossed the border.

鈥淣ow it鈥檚 going to have to apply for American citizenship,鈥� said Trudgian.

is a wildlife shelter, located at 4th Avenue and 216th Street in South 91原创, that provides short- and long-term care to native mammal from throughout the province.

The incident occurred at about 4 p.m. on Sunday, June 18, and while one of the cubs is still missing, Trudgian assured there鈥檚 鈥渘o public safety risk.鈥�

Because the province is responsible for permits to this facility, conservation officers came back to further inspect the broken roof.

Trudgian said the initial cause of the roof collapse couldn鈥檛 be determined, but it seems that thee was a small hole to start with.

鈥淚t looks like the bears pulled down the rest of it,鈥� he said. 鈥淏ears are pretty smart.鈥�

The bear was an orphaned animal from the Port Coquitlam area, taken in by Critter Care last year.

Ironically, all five bears were due to be released this month anyway. They have spent nearly a year at Critter Care.

Since the weekend, two have been released near Squamish, and two more are to be released into the wild soon.

Society鈥檚 Sonia Kucharonok said if anyone sees the bear to call conservation at at 1-877-952-7277 and to notify Critter Care so they can track 鈥渉er movements.鈥�

Admittedly, there are not a lot of black bears in 91原创, but there are now at least three that Trudgian is aware are living in the community, one adult, one cub, and now this little guy.

Although he said there鈥檚 no public threat, especially in this rural neighbourhood of 91原创, he reminds people to be aware and to avoid leaving food out that would lure in bears or other wildlife.

The Township of 91原创 offers a series of ideas of how to be more Wildlife Aware, .