Pokemon Go continues to hit the headlines.

Border Patrol agents detained two teenagers from Canada on Thursday after they illegally crossed the border into the U.S. while playing the game.

The duo, who have not been identified, were so busy playing the smartphone app that they didn’t realize they’d walked into another country, the Toronto Sun reports.

Sam Mircovich / Reuters Border Patrol stopped the pair as they walked southbound near the Montana community of Sweets Grass, near the Alberta province town of Coutts.

Agents apprehended the pair as they walked southbound near the Montana community of Sweets Grass, which borders the Alberta province town of Coutts.

After discovering the teens were “unaware of their surroundings” and did not pose a threat, authorities transported them to the nearby Border Patrol Station.

“Both juveniles were so captivated by their ‘Pokemon GO’ games that they lost track of where they were,” the U.S. Customs and Border Protection agency’s public affairs officer Michael Rappold said via a statement.

“They crossed the international border inadvertently, but agents were able to reunite them with their mother,” he added.