Formal report set to be released on Thursday by investigating panel

SEOUL - Republic of Korea Foreign Minister Yu Myung-hwan said on Wednesday that involvement of Pyongyang in the deadly sinking of an ROK warship in March is "obvious," the ROK's Yonhap News Agency reported.

Yu told a group of European diplomats and business officials that the ongoing investigations have revealed that the previously unexplained explosion was caused by "the detonation of a torpedo", according to Yonhap.