Two construction workers were injured at a home under construction in northeast Calgary Monday morning.
One of the men fell more than three metres from the roof to the basement when three of the walls of the house collapsed.
He was removed from the scene by ambulance. Another construction worker was also injured by the collapse.
The incident occurred at 31st Avenue and Fifth Street. N.E. in the neighbourhood of Winston Heights.
Fire crews have secured the scene because the structural integrity of the building has been compromised by the collapse.