A Danville apartment sustained heavy damage in a fire Sunday night, according to the Danville Fire Department. Crews say they responded just before midnight to the 300 block of Seminole Trail. Crews found a 12-unit, two-story apartment building with the apartment in the center on fire with heavy flames. The fire caused heavy damage to both floors of the apartment. Crews say they contained the fire to one apartment. All residents of the complex returned to their homes, except for the residents of the apartment that caught fire and their neighbors, whose apartment will need to be cleaned up by crews before returning. The Danville Fire Department Fire Marshalls’ Office is investigating the cause of the fire.