St. Clair County Sheriff's Office issued the following announcement on Aug. 5.
Sheriff Mat King sadly reports the passing of K-9 Fist.
Due to multiple health issues, Fist was euthanized on Wednesday.
Fist served the St. Clair County Sheriff’s Office as a patrol/narcotics dog from March 2010 through January 2016. After his retirement, Fist lived out the rest of his life at the home of his handler, Deputy Mike Pink.
Original source can be found here.