Fire Marshal investigating fire at housing duplex in Ullin, Ill. Fire Marshal investigating fire at housing duplex in Ullin, Ill. By Marsha Heller and Alayna Chapie | March 3, 2021 at 5:05 AM CST - Updated March 3 at 5:19 PM ULLIN, Ill. (KFVS) - A fire broke out early Wednesday morning at a Pulaski County Housing Authority duplex in Ullin, Illinois. Crews were called to the building located on Foster Street at approximately 4:31 a.m. When firefighters and deputies arrived, the building was fully engulfed in flames. Crews have only been able to battle the fire from the outside. Ullin Fire Chief Kenny Wright said the cause of the fire is unknown at this time and the State Fire Marshal has been called in to investigate.