Four teenagers have been rescued from a mine in Wiltshire where they'd been stuck for six hours, after trying to find creatures on the Pokemon Go app.

The game encourages users to roam the real world in search of the virtual characters.

They were only saved after eventually managing to contact fire crews from the bottom of a 100-foot ventilation shaft at Box Mine. The teens were unharmed.

Read all you need to know about Pokemon Go here.