Adventurous Pokémon Go trainers in Bosnia are traversing dangerous minefields in search for elusive Pokemon, according to a report by the BBC.

A local demining charity called Posavina Bez Mina (Posavina Without Mines) issued a warning on its Facebook page after receiving reports of intrepid Pokémon trainers in minefield areas. The post warned, “Citizens are urged not to do so, to respect demarcation signs of dangerous mine fields and not to go into unknown areas.”

An estimated 120,000 mines are still undiscovered in Bosnia, a leftover legacy of the 3-year war that involved the country in the early 90s. At least 600 people have been killed in landmine accidents in Bosnia since then.

Pokémon Go related incidents have been on the rise since the game launched in select regions of the world. Earlier this week, two men fell off a cliff while playing the game. Another incident involved a player crashing his car into a police cruiser while driving for Pokémon.