Hosseinpour died mysteriously in early 2007 during his nuclear work at Isfahan.

Other officials said the administration would like the inspections to include several sites that are suspected of being involved in hidden nuclear work.

The inspectors now want to examine the military sites to see whether secret nuclear work is under way.

There are four tendencies in his work: realistic, genetic, geophysical and nuclear.

A better way is to offer inducements for Russia to find other, safer nuclear work.

According to The Guardian, he "had no known links to banned nuclear work".

The most recent tests suggested that nuclear work has accelerated, but the results were inconclusive.

Iran said the razed construction was not related to military or nuclear work.

Last summer, after news that Iran had resumed nuclear work prompted international concern, investors withdrew from the market and stock prices plunged.

Iran has insisted that all of its nuclear work is for civilian purposes.