AP Exclusive: Police investigate Iran nuke expert

By GEORGE JAHN | September 19, 2011 | 3:25 PM EDT

VIENNA (AP) — An intelligence summary says a colleague of a nuclear scientist shot dead in Tehran is being investigated in Iran on suspicion he leaked information leading to the killing.

The report by an IAEA member nation shared with The Associated Press identifies the suspect as Mojtaba Dadashnejad. It says he worked with the victim, Darioush Rezaeinejad, on suspected Iranian attempts to make nuclear weapons.

Rezaeinejad was shot in July. An official from a member nation of the Vienna-based International Atomic Energy Agency said at the time the victim helped develop high-voltage switches, a key component in setting off the explosions needed to trigger a nuclear warhead.

An abstract seen by the AP on such switches bears the names of both Rezaeinejad and his co-author, Dadashnejad.