 In May 2010, there were a number of incidents in the area.The Russian destroyer "Marshal Shaposhnikov" freed the 106,474-ton MV Moscow University, which was about 350 miles east of Socotra, transporting crude oil from Sudan to China.Two days later, however, Russia's Defense Ministry said it had proved impossible to establish the pirates' citizenship or to establish legal grounds for prosecuting, therefore the pirates were returned to their boat and set free.