O'FALLON, Mo.- Police officers arrested four individuals after they responded to a Armed Robbery near Highway K and Feise Road. The suspects were driving a black BMW and also had a handgun with them.

Police believe the suspects used Pokémon Go to target victims in both St. Louis and St. Charles counties. They believe the suspects put a beacon on a Pokéstop to lure more people, or in this case victims. The suspects used the app to locate the people standing around the Pokéstop and rob them.

O'Fallon police are warning people to be aware of their surroundings and for parents to know where their children are going.