RYONGCHON, DPRK, April 24 (Xinhuanet) -- At least 154 people, including 76 students, have been confirmed killed in Thursday's train explosion at the Ryongchon railway station in North Phyongan province in the Democratic People's Republic of Korea (DPRK), Jang Song Gun, a senior official in charge of rescue efforts on the scene told Xinhua Saturday.