Vienna/Tehran, Sep 9 (DPA) Iran Wednesday faced stark accusations from the International Atomic Energy Agency (IAEA) and the US of developing nuclear weapons as it delivered a new package of proposals to the six countries involved in nuclear talks with the Islamic state.

Iran's package was issued in Tehran shortly before IAEA chief Mohamed ElBaradei said in Vienna there was a 'high probability' that Iran worked to develop nuclear weapons in the past, if intelligence information in that regard is genuine.

Also speaking at a meeting of the IAEA's governing board, US envoy Glyn Davies said Tehran may have enough enriched uranium for one atomic bomb, a view voiced previously by experts.

ElBaradei was referring to documents received by his organisation that points to a number of suspicious Iranian studies, including the modification of the model of a missile to carry a nuclear warhead.

'I am not a scientist, but I can tell you this: If this information is real, there is a high probability that nuclear weaponisation activities have taken place,' he said. 'But I should underline 'if' three times.'

ElBaradei urged Iran to finally clarify these issues, a call echoed by Britain, France, Germany and the US.

In Vienna, US ambassador Glyn Davies said Iran now has enough material for one bomb, should it decide to further process its uranium.

He said Washington had serious concerns that Tehran's leaders at least want the option to develop such weapons, a scenario he called a 'dangerous and destabilising possible breakout capacity'.

In Tehran, Foreign Minister Manouchehr Mottaki handed his proposals to the diplomatic envoys of Britain, China, France, Germany, Russia and Switzerland - the latter representing the diplomatic interests of the US in Tehran.