A multi-agency operation in the Pioneer Park area at 300 West has resulted in 28 arrests, mostly drug-related.

Salt Lake Police Sgt. Craig Gleason said the Tuesday night operation began at 11 p.m. and included Metro Narcotics/Drug Enforcement Administration, the INS and Pioneer patrol officers.Undercover officers made several hand-to-hand buys from people at the park, resulting in the seizure of a small amount of heroin and several grams of cocaine.