The UN’s atomic watchdog, answer the International Atomic Energy Agency (IAEA), said Monday it will hold talks on Wednesday seeking to jumpstart its long-stalled probe into Iran’s alleged past efforts to develop nuclear weapons, AFP reported.

The meeting in Tehran will be the first since Iran and six major powers agreed on April 2 the main outlines of a deal curtailing Iran’s nuclear activities in return for sanctions relief.

Western officials say it is crucial for Iran to answer the IAEA’s long-standing questions about the “possible military dimensions” of its activities before any sanctions can be eased.

Iran rejects the allegations as false information provided to a gullible and partial IAEA by the Islamic republic’s enemies, complaining that it has not even been given an opportunity to see much of the supposed evidence itself.

Under the April 2 agreement, Iran agreed to scale back dramatically its nuclear program and submit to ultra-tight IAEA inspections in order to make any dash to make a nuclear bomb extremely difficult and easily detectable.

It should be noted, however, that under the interim agreement reached with Iran in 2013, the Islamic Republic was supposed to – and failed – to provide the IAEA with answers regarding to whether it worked on nuclear arms in the past.

IAEA director general Yukiya Amano recently said that the IAEA had limited progress in its inquiry into possible military dimensions of Iran’s nuclear activities.

In February, the IAEA reported little progress in its attempts to probe allegations that Iran worked on nuclear arms. The agency already indicated back in November that Iran is refusing to answer questions on the military aspects of its program.

The Vienna-based IAEA said in Monday’s brief statement that its delegation at Wednesday’s “technical meeting” will be headed by chief inspector Tero Varjoranta.