There is a festival going on right now that takes place a couple of days before the New Year. There was a fire but only one I think and it wasn't caused by rioting or Molotov cocktails
I suspect a con job. No credible links yet.
All reports indicate that almost every neighborhood in Tehran is on fire. People are throwing home-made bombs, Molotov cocktails, etc. into the homes of mullahs, and burning pictures of Khamenei in complete defiance of his recent edict to mourn during the month of Muharram.
Background: Khamenei delivered a declaration (not really a fatwa, although some say it was) to Iranians to honor the month of Muharram, which started about two weeks ago, and to mourn and not have any parties of merriment. Well, the problem is that the Iranian New Year (Nowrouz), March 20th (totally non-religious and cultural event -- although Zoroastrian in origin) falls in the middle of this, and Iranians were enraged about this edict.....