Ronen Bergman, writing about today’s Isfahan incident and the recent missile base explosion, added extensive detail about how Mossad might’ve caused such sabotage in the latter case:
The Iranians believe the hand of the Mossad was involved with the help of Iranian opposition forces [the MEK]. The Iranians believe the target was not the actual facility but Gen. Hassan Moghaddam, who supervised IRG missile research and development. In their evaluation, the operation succeeded beyond what the Mossad had anticipated. This occurred because the attackers used an enormous quantity of explosive material in order to destroy the entire office building in which Moghaddam was located. This caused damage to the fuel tanks and other explosives located there which caused an even greater explosion.