Two people were taken to hospital in critical condition following a house fire in southeast Calgary early Tuesday morning. Firefighters were called to a bungalow in the 100 block of Doverthorn Close S.E. around 3:49 a.m. Crews arrived to find light smoke coming from the home and discovered a fire in the basement. During a search of the house, firefighters located two residents inside. Both were taken to hospital in critical condition. A dead cat was also found inside the home. There was little visible damage to the exterior of the house, aside from a broken basement window. The cause of the fire remains under investigation.