A building at a Lafarge plant in southeast Calgary was heavily damaged in an early morning fire.
Crews were called to the facility, on Duff Drive S.E. at about 2:30 a.m.
Rocky View County Fire Services responded to the scene and were supported by the Calgary Fire Department.
The fire was extinguished by 7 a.m.
One of the buildings at the site sustained significant damage.
No one was injured and the cause is unknown.