The Iranians have been feverishly rushing their work as reported by the IAEA. More then likely there was a mishap. Lets not give the Mossad that much credit that they can actually sneak into a country like Iran that easily. France in 1991 was totally different and they were able to falsify documents. If more people start popping up dead then maybe you can say the Mossad may be behind it. I won't give them credit for this it only swells their heads and continues the invincibility myth.
Bennett, Deri expected to resign from Knesset, remain in cabinet under new 'Norwegian Law’ (Haaretz)
from the article: U.S. website: Mossad killed Iranian nuclear physicist