Ukrainian billionaire Dmytro Firtash was arrested on March 12 in Austria on a U.S. arrest warrant issued by the Federal Bureau of Investigation, the Interior Ministry of Austria stated.

Firtash, 48, a chemicals and energy tycoon and one of the richest men in Ukraine, was just one of the suspects arrested. The arrest happened on March 12 in Vienna’s Margareten district. The seizure happened openly and without incident in the street, in the immediate vicinity of the suspect’s business premises, Austrian News Agency reported.