A man has pleaded not guilty to aggravated murder, robbery and other charges in the deaths of four men at their homes. Donald Hoffman is charged on 21 counts for the slayings in Bucyrus. Some counts include specifications for a potential death penalty. The 41-year-old Hoffman wore an orange jail outfit and handcuffs Monday in Crawford County court. He's jailed on $10 million bond. His attorney declined to comment. Two men were discovered dead Sept. 1. Two others were found the following day after police say Hoffman approached officers with information. A coroner determined the men were beaten, strangled or both. They ranged in age from 55 to 67. Friends and relatives say at least some of the men knew one another and Hoffman.