Johnston, Ia (AP) — An Iowa woman has been charged after officials say she kept three children locked in a blacked-out room in filthy conditions. Court records show 31-year-old Brittany Roozeboom, of Johnston, was charged last week with three counts of child endangerment and one count of child endangerment resulting in bodily injury. Police say the children were kept for extended periods in a room with black-painted cardboard covering the windows that locked from the outside and had no internal doorknob. Police say the children were in the room so long that they sometimes soiled their clothes. Police say there also was trash strewn across the kitchen with bugs crawling on the floor. Roozeboom is being held in the Polk County Jail.