Yemen Coast Guard Police Sector in the Red Sea said that Eritrean pirates hijacked four Yemeni fishing boats with 21 sailors on board in the international waters, Yemeni Ministry of Interior reported. "The Eritrean pirates forced the Yemeni fishing boats to head to the area of Tiawa of Eritrea where they confiscated the contents of the boats and deported 10 Yemeni sailors who arrived today at the fishing port of Hodeidah governorate on an Eritrean boat," Saba quoted the Ministry as saying. Investigation is underway to restore the fishing boats with the remaining 11 sailors detained by the Eritrean pirates.