Police boat in Hamburg, Germany. Photo: wiki commons.

JPost/Reuters – German police have arrested four men suspected of delivering valves for a heavy water reactor to Iran and breaking an embargo on such exports to the Islamic Republic imposed over its disputed nuclear program.

Prosecutors said some 90 customs officers arrested the men – one German and three with dual German and Iranian citizenship, at their homes in the northern cities of Hamburg and Oldenburg and the eastern town of Weimar, and searched flats and offices.

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