A special Pokémon GO event is currently taking place at the Tottori Sand Dunes in Japan, where rare Pokémon such as Mr. Mime and Unown are officially appearing in the wild between yesterday, November 24, and tomorrow, November 26. A group of 10 Pokémon GO players in the region apparently violated railway laws by Pokémon hunting in restricted areas. As a result of this, five express trains in the area were affected by delays.
Source: Yahoo! Japan