Four teens allegedly used the newly-released "Pokemon Go" app to commit multiple robberies in St. Louis and St. Charles counties.

Brett Miller, 17, of St. Peters, Jamine Warner, 18, of O'Fallon,Mo., and Shane Backer, 18, of Wentzville are charged with first-degree robbery and armed criminal action. A 16-year-old suspect has also been charged

The suspects were located by O'Fallon Police after responding to an armed robbery call around 2 a.m. Sunday near Highway K and Feise Road in St. Charles County. The suspects were sitting inside a vehicle and a handgun was recovered from them, police said.

Police believe the suspects conducted multiple armed robberies by targeting their victims through the mobile game "Pokemon Go." They believe the suspects added a beacon near a Poke-stop in their location, which could lure more players nearby.

The mobile game is a geo-cached mobile application where players can find and catch Pokemon in their area or the surrounding areas.

Police said the suspects stole a wallet and phone.

O'Fallon Police are warning those who play the game or have children who play the game to do so with caution. Nintendo shares soared again on Monday as investors cheered the runaway success of Pokemon GO, Nintendo's first venture in mobile gaming. Pokemon GO is now one of the most used apps on people's phones.