CAROL COSTELLO, CNN ANCHOR: And we're getting more information on that tremendous explosion along a rail line in northeastern Iran. We understand the provincial governor was among those killed, as well as a number of rescue workers. CNN's Matthew Chance has more.</s>MATTHEW CHANCE, CNN CORRESPONDENT: Well this appears to have been an explosion of huge proportions involving a train several hundred kilometers from the Iranian capital, Tehran, in the Province of Khorasan in the northeast of the country. We're just building up a picture of what exactly happened before this explosion took place. It seems from the reports that we have got from the area that a number of carriages of a cargo train that were carrying highly inflammable materials like petroleum, gasoline, sulfur and fertilizer, somehow became uncoupled from the main body of the train and began to roll away before careering at high speeds off the tracks into a populated area. It seems, though, that the majority of the dead and injured, and just to recap, we have now confirmed 200 people have been killed
Iranian Train Accident: More than 200 Killed