PELLA, Iowa (AP) — A 66-year-old southern Iowa man was identified as the driver of a pickup truck that crashed into a southeast Iowa Wal-Mart, killing three and injuring himself and another man in what officials believe was an accident. Witnesses have said the driver, Dennis Mockenhaupt, of Knoxville, Iowa, plowed through a glass front entrance of the Pella store at a high rate of speed.Read more on NewsOK.com