Floods shut down Canada's oil capital, four may be dead

A woman attempts to walk down a flooded downtown street in Calgary, Alberta June 21, 2013. REUTERS/Melissa Renwick

CALGARY, Alberta (Reuters) - The heaviest floods in decades shut down the Canadian oil capital of Calgary on Friday, with an evacuation of the downtown core and tens of thousands of residents forced to leave their homes.

Police said four people may have died in the town of High River, located about 60 km (37 miles) south of Calgary, including a woman who was swept away with her camper and a man seen falling from a canoe in the swollen Highwood River.