A house fire in northwest Charlotte is being investigated as a possible arson. Charlotte firefighters were called out to the 4400 block of Mount Holly-Huntersville Road shortly after 5 p.m. Thursday. Officials say a woman came home and found smoke in her house. No one was injured. A CFD captain told WCCB that “a criminal investigation” was taking place. CMPD confirms their officers are assisting in the investigation.