VIENNA (AP) — Top Iranian officials coming to Vienna usually hold talks with the head of the UN nuclear agency. But diplomats say not this time, in a development that may reflect a deadlock in agency attempts to probe Tehran’s atomic work.

Iranian Foreign Minister Ali Akbar Salehi is coming to a conference Tuesday that has nothing to do with the International Atomic Energy Agency (IAEA). Still, he has missed few chances when in Vienna to meet with Yukiya Amano, whose International Atomic Energy Agency is monitoring Iran and trying to investigate suspicions it might have worked on atomic arms.

IAEA officials recently suggested a pause was needed on related talks after they dragged on without results. Iran denies such work or wanting such weapons.

The diplomats demanded anonymity because their information was confidential.

Copyright 2013 The Associated Press.