A mysterious explosion in a suburb of Teheran that killed 15 people last Saturday was likely an attack on a Iranian military convoy carrying arms to Hizbullah, the Telegraph reported Friday. The Iranian Revolutionary Guards imposed a news black-out immediately after the blast, but the UK newspaper reported that it looked like sabotage was responsible for destroying the convoy as it traveled through Khavarshahar. The newspaper noted that the company responsible for moving the military equipment, LTK, was owned by the Revolutionary Guards and was allegedly involved in shipping arms to Hizbullah. Last Saturday's incident was the latest in a series of mysterious explosions in the Islamic republic. In May, Iran blamed British and US agents for an explosion at a mosque in Shiraz that had just been the site of a military exhibition. In 2007, more than a dozen Iranian engineers lost their lives while trying to fit a chemical warhead to a missile in Syria. A few months earlier, a train apparently carrying military supplies to Syria was derailed by an explosion in northern Turkey.