An elderly woman is dead following a house fire in Lac-Mégantic, about 350 kilometres east of Montreal.

Authorities said the fire started around 9:35 p.m. on the ground floor of the Millette Street home.

Firefighters managed to contain the fire to the first floor of the house. They discovered the 74-year-old woman's body inside.

An investigation was launched to determine the cause of the fire.