Gunmen kill Iranian nuclear scientist in Tehran

Associated Press ^ | July 23, 2011 | ALI AKBAR DAREINI

[ScaniaBoy]

UPDATE: Shot Iranian said to be nuke expert

Ex-IAEA official says physics professor Darioush Rezaei, who was assassinated in Tehran, was indeed an atom scientist.

And:

An official, from a member nation of the Vienna-based International Atomic Energy Agency, verified that the victim was named Rezaeinejad, but said he participated in developing high-voltage switches, a key component in setting off the explosions needed to trigger a nuclear warhead. An abstract seen by the AP and co-authored by Rezaeinejad appears to back that claim.

[Smokin' Joe]

You use electronics too, getting all the explosives to fire at once. Which says they are likely pursuing an implosion type physics package...