◼ Semi-official Fars news agency says blast heard distinctly in several parts of the western Iran city; a uranium conversion plant near Isfahan went online in 2004. - Haaretz/Reuters
It seems that city authorities and the Iranian government were embarrassed by the reports of a blasts, releasing contradictory versions of the alleged events.
The Revolutionary Guard said the accidental explosion occurred while military personnel were transporting munitions.
◼ BREAKING: Huge Explosion In IRAN's Nuke City - Yid With Lid
◼ Related: Image shows (another) Iranian missile site was destroyed (two weeks ago)
(Paul Brannan, a senior analyst for the Institute for Science and International Security,) said ISIS had recently learned from “knowledgable officials” that the blast had occurred just as Iran had achieved a milestone in the development of a new missile and may have been performing a “volatile procedure involving a missile engine at the site.”