London Telegraph 
Friday, July 25, 2008
The explosion took place in the Tehran suburb of Khavarshahar as the military convoy left a munitions’ warehouse controlled by the Revolutionary Guards. According to reports received by Western officials, the convoy was taking a consignment of military equipment to Hizbollah, the Shia Muslim militia Iran supports in southern Lebanon, when the explosion occurred.
Senior Revolutionary Guard commanders immediately imposed a news black-out following the explosion, even though it could be heard throughout the capital Tehran, and no details of the incident have so far appeared in the Iranian media.
But Western officials yesterday said they had received reports that the explosion took place in Tehran on July 19, and that the Revolutionary Guards had launched an investigation into the causes of the blast.
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“This was a massive explosion that was heard throughout Tehran,” one official told the Daily Telegraph. “Even though lots of people were killed the Revolutionary Guards are trying to conceal what really happened.”
Iran is believed to have recently stepped up arms shipments to Hizbollah in preparation for any future armed confrontation with the West over its controversial nuclear enrichment programme.