A man has died while working on a giant bulldozer in Alberta's oil sands.
The provincial government says the 37-year-old was doing maintenance work on the machine at a Suncor Energy Inc. mine site near Fort McMurray.
The government says a reservoir or sump pan fell on the worker's head.
The man was taken to hospital in Fort McMurray, where he died of his injuries.
He worked for North American Construction Group of Edmonton.
The company said in a statement that the man was an out-of-province employee, but did not release his name.
"We are devastated by this news and deeply saddened by the terrible and unexpected lose of our co-worker and friend," said Martin Ferron, North American Construction Group president.
"We will do everything within our power to provide the support they need during this extremely difficult time."
Lauren Welsh with Alberta's Occupational Health and Safety department said officers are at the site investigating the death.
Three other workers have died at Suncor job sites this year.
Most recently, Lorna Weafer was killed by a black bear while working at the company's base camp. Co-workers tried to scare the animal off the instrument technician but were unsuccessful.
In April, an electrician was fatally injured while working near some electrical panels. Tailings operator Jerry Cooper's body was found submerged in a sand dump in January.