Two people are in critical condition after a house fire over the weekend. Rochester Firefighters responded to a fire on Lexington Avenue just after 7 a.m. Saturday. Firefighters say smoke was pouring out of the second floor of the three-family house. Investigators said the fire started in the kitchen of the upstairs apartment. Firefighters had to rescue two people from the house. They were taken to Strong Memorial Hospital in critical condition. The Arson Task Force is investigating the cause.