CEDAR RAPIDS, Iowa (AP) — Investigators have determined that someone intentionally started a fire at a Cedar Rapids apartment building, injuring eight residents. A city news release says the fire reported around 3:45 a.m. Thursday originated in a hallway of the three-story, six-unit building. No arrests have been reported. The Cedar Rapids Fire Department says arriving firefighters found some people hanging from windows and others injured during their escapes. The department says ladders were quickly employed to help residents to safety as firefighters attacked the blaze, which was extinguished by 4:50 a.m.