Jabłonków Incident (Polish: Incydent jabłonkowski, Czech: Jablunkovský incident) refers to the events of the night of August 25/26, 1939, along the Polish - Slovak border. On that night, a group of German Military Intelligence (Abwehr) armed agents attacked a rail station in Mosty. The main purpose of the attack was to capture the Jablunkov Pass, with its strategic railroad tunnel, until the arrival of the German armed forces. The attackers were repelled by units of the Polish Army, and the incident is regarded as a prelude to the German invasion of Poland.