More details on a bear attack that left a woman dead in northern Alberta have been released, with union officials saying the woman was working with a group, but was dragged away by the animal.

Reports surfaced late Wednesday afternoon that a Suncor employee had died following a bear attack at a worksite located 25 kilometres north of Fort McMurray.

The incident happened at about 3:30 p.m., at the Suncor Oil Sands base plant – Occupational Health and Safety officials said a mature black bear attacked the woman, and she was pronounced dead at the scene.

CTV News has confirmed the woman killed in the incident was Lorna Weafer, 36 – an instrument technician who was doing electrical work when she was attacked.

A spokesperson for Unifor, the union representing Weafer, told The Canadian Press that seven people were working in an area and the victim was attacked and dragged away.

“People tried to stop it and do everything they could,” spokesperson Scott Doherty said. “Obviously they are fairly horrified at what they saw and witnessed.”

Another union official told The Canadian Press that co-workers blasted air horns in an attempt to scare the bear away.

RCMP said after the attack, a bear was put down in the area, and officials are testing to determine whether it was the same bear that attacked the woman – bear traps have been set in case it wasn’t.

Suncor told CTV News that its employees receive wildlife training – although the union said it could be more extensive.

“There was a report out that they receive extensive training,” Doherty said Thursday. “Our members are not aware of what that training is.

“But it’s certainly not extensive by any stretch of the imagination.”

Officials with Alberta Fish and Wildlife said the site of the attack, along the Athabasca River, was not fenced off – but there were no non-natural attractants in the area at the time of the attack, meaning there was no garbage or man-made items that could have attracted bears to the area.

After the incident, Occupational Health and Safety officials said they were investigating.

With files from CTV Edmonton’s Dan Grummett, The Canadian Press, and CTV Calgary