Investigators have wrapped up their investigation of a crop-duster plane crash in the north-central Iowa town of Osage. An official with the Federal Aviation Administration yesterday completed his on-site investigation of a plane crash from Saturday night. The plane went down shortly after taking off from the Osage airport and burst into flames when it slammed into the ground. The pilot, who has yet to be identified by authorities, was taken from the Mitchell County Regional Health Center in Osage to St. Mary’s Hospital in Rochester Minnesota, where he is still hospitalized but no condition report is available. Some homes and businesses around the crash site were without power until Sunday afternoon due to the crash.