On Tuesday afternoon, officials in Waterbury made an arrest amid the investigation into a factory fire that happened on New Year’s Eve. A massive fire destroyed a vacant factory in Waterbury, on South Main Street and Pearl Lake Road around 8:45 p.m. on Saturday. A police officer had been patrolling the area and spotted the fire. Crews worked throughout the night and into the morning to put out the flames. The fire marshal had deemed the fire as arson, and detectives looked into video that revealed a person of interest.