VIDEO: Investigators are looking into what caused a fire at a two-family home in Rochester early Tuesday morning. Firefighters were called to the scene on Dodge Street just after 5 a.m. They say they found "heavy fire" on the first floor of the two-story home. The people who live on the second floor called 911 after their apartment started filling with smoke, causing the smoke detector to go off. Officials say the people who live on the first floor were not home at the time. No one was hurt.