Deputy Sheriff John Mullen Sack, a 45-year-old white male, tragically lost his life on October 1, 1987, in Peoria, Illinois. Deputy Sack was serving a warrant on a man for a code violation related to not cutting his grass. The incident occurred at 2102 North University Street. As Deputy Sack exited the residence to wait for the man to retrieve his ATM card to post bail, he was shot in the back. The shooter was subsequently killed in the ensuing standoff with law enforcement.
Deputy Sack had served with the Peoria County Sheriff's Office for 20 years and was also a U.S. Army Reserve veteran. He was survived by his wife, son, and two daughters. The community and his fellow officers remembered him as a dedicated and compassionate individual who cared deeply about his fellow human beings.
The investigation into Deputy Sack's death was straightforward as the shooter was killed during the standoff. There were no further arrests or suspects related to the case. The incident was a significant loss for the Peoria County Sheriff's Office and the community, who honored Deputy Sack's memory and service.