Police in Ostróda identified locations where illegal gambling games were allegedly being run. Officers from the Criminal Division of the Ostróda District Police worked with the Warmian-Masurian Customs and Tax Service officers in Olsztyn. The joint operation ended with the seizure of 12 illegal gaming slot machines and close to 50 grams of mephedrone. Police detained four people as part of the operation. The case concerns suspected illegal gambling activity and possession of mephedrone seized during the joint action in the region.