Four teenagers are suspected of using the smartphone game Pokémon Go to lure their victims in several armed robberies, the O’Fallon, Missouri Police Department reported in a Facebook post.

The suspects - Shane Baker, 18, of Wentzville; Brett Miller, 17, of St. Peters; Jamine Warner, 18, of O’Fallon; and one minor - were taken into custody late Sunday and charged with first degree robbery and armed criminal action.

Police said they also located a black BMW and a handgun belonging to the suspects.

The Pokémon Go smartphone application is an augmented reality (AR) game in which players can “catch” Pokémon creatures in the app when they are near certain real-world locations.

The suspects are thought to have used the app to lure victims to a particular location by adding a “beacon” to the site in the game.

“**Many of you have asked how the app was used to rob victims, the way we believe it was used is you can add a beacon to a pokestop to lure more players. Apparently they were using the app to locate ppl standing around in the middle of a parking lot or whatever other location they were in,**” the police Facebook page explained.

The Pokémon Go website encourages users to “get outside and walk around” because “Pokémon love places like public parks and recreation areas.”

However, it also warns: “For safety’s sake, never play Pokémon Go when you’re on your bike, driving a car, riding a hoverboard, or anything else where you should be paying attention, and of course never wander away from your parents or your group to catch a Pokémon.”