Polish military police detained a man with dual Polish-Ukrainian citizenship in Łódź, suspecting him of spying. The arrest was carried out after the suspect appeared to be taking part in a training course for reservist officers at an academy in the city, according to Reuters. The academy said the man was detained last week, on Friday. During the arrest, authorities found multiple mobile phones, documents and official stamps. Police also seized large amounts of gold and substantial sums of money from the suspect, Reuters reported. The investigation is being handled by the competent services, a Polish defence ministry viceminister, Cezary Tomczyk, said. He added that the man had obtained Polish citizenship some time ago. The case is at the detention stage, with no charges or court outcome described in the available details.