VIENNA - The UN nuclear watchdog plans talks with Iran on Monday ahead of a May 15 deadline for the country to implement a series of measures that could allay concern about its nuclear programe that the West fears may have military goals.

News of the meeting came after diplomatic sources told Reuters on Friday that the International Atomic Energy Agency was seeking further clarification from Iran about one of those steps, concerning information about detonators that can help set off a nuclear device and Tehran is believed to have developed.

Iran says it has already implemented the seven steps agreed by the two sides - including access to two uranium sites - but the sources suggested the IAEA still wanted more information about the so-called Explosive Bridge Wire (EBW) detonators.

How Iran responds to questions about its development and need of this type of equipment is seen as an important test of its willingness to cooperate fully with an IAEA investigation into suspected atomic bomb research by the country.

Iran says allegations of such work are baseless, but has offered to help clear up the suspicions with the UN agency.

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