Municipal police, Butler County Sheriff Mike Slupe’s Office and Pennsylvania State Police are holding a rally at noon Friday in Diamond Park to commemorate National Law Enforcement Day.

The event is co-sponsored by the National Fraternal Order of Police, C.O.P.S. (Concerns of Police Survivors) along with various other law enforcement associations across the country.

Butler County has 23 law enforcement agencies with more than 300 active law enforcement officers.