APRIL 2004 : (NORTH KOREA : EXPLOSION) On April 22, 2004, a massive explosion occurred on a North Korean freight train heading for the port of Namp’o. According to British intelligence writer Gordon Thomas, the Mossad had learned that dozens of Syrian nuclear technicians were in a compartment adjoining a sealed wagon. According to Thomas, the Syrians had arrived in North Korea to collect the fissionable material stored in the wagon. All of the technicians were killed in the train explosion. Their bodies were flown to Syria in lead-encased coffins aboard a Syrian military plane. A wide area around the explosion site was cordoned off for days as North Korean soldiers in anti-contamination suits collected wreckage and sprayed the area. Mossad analysts suspected they were trying to recover weapons-grade plutonium. Since the explosion, the Mossad tracked about a dozen trips by Syrian military officers and scientists to Pyongyang, where they met with high-ranking North Korean officials.[20]
-— https://en.wikipedia.org/wiki/Operation_Orchard