The Veazie Fire Department is investigating a fire on Olive Street.A tentant of the three unit apartment building discovered the fire around two Saturday morning after finding her apartment filled with smoke. All tenants safely escaped. Firefighters from Veazie, Old Town and Orono contained the fire within 20 minutes of arriving.Fightfighters remain on the scene for several hours after the fire, due to the damage and consturction of the building.Fire officials say there is significant smoke and water damage throughout the building. It is unsure if any of the tenants or if the building was insured. the cause of the fire is still under investigation.