A bear attacked and killed a female oil sands worker at a Suncor Energy plant in Alberta, Canada on Wednesday.

The Royal Canadian Mounted Police told CBC news they received a call just after 2 p.m. stating a large, male black bear had attacked a worker. Authorities declared the woman dead on the scene, but were able to shoot and kill the bear, which remained in the area.

Suncor spokesperson Sneh Seetal said the attack happened at a company base camp which she wouldn’t classify as a “remote facility,” and that all workers participate in wildlife interaction training.

“We don’t know why this happened. We are reminding people to be especially vigilant in dealing with wildlife. That’s why it’s so important we conduct a full investigation and work with the regulatory bodies to determine what happened in this tragic situation,” Seetal said.

Barrie Harrison, spokesperson for Occupation Health and Safety, said it will conduct an investigation along with Suncor and Fish and Wildlife officers.

“We have a lot of different environments in this province of ours–we have lots of different types of wildlife,” he said. “For the most part, companies are very good at understanding what the hazards are and having mechanisms in place to deal with those hazards. . . I do know that, certainly from an Occupational Health and Safety perspective, this is the first that I’m aware of having a worker either seriously injured or killed by a bear of any variety.”