Merced Police were tipped off by citizens, who were concerned about people selling marijuana to children near Applegate Park.
An undercover officer approached a group of men Thursday afternoon and attempted to buy pot from them. He says -- he was able to buy forty dollars worth, and then -- officers moved into make the arrests.
Four men, ages 21 to 42 -- were taken into custody. They're now locked up in the Merced County Jail.