Iran handed the UN nuclear agency documents on its past atomic energy activities today, but the dossier apparently did not include the origin of traces of weapons-grade uranium found in the country.
"We have submitted a report fully disclosing all our past activities in the nuclear field," Mr Ali Akbar Salehi, Iran's representative to the Vienna-based International Atomic Energy Agency, told reporters.
Neither Mr Salehi nor IAEA Director-General Mohamed ElBaradei would elaborate on the contents of the documents, which Iran turned over ahead of an October 31 deadline to prove its nuclear programme is peaceful.
ElBaradei said he expected the information to answer all outstanding questions about Iran's nuclear activities. "I was assured that the report I got today is a comprehensive and accurate declaration," he said.
Mr Salehi indicated the origin of traces of highly enriched weapons-grade uranium found in at least two different sites inside the country was not in the package.
Diplomats said earlier this week that Iran was expected to provide the origin of the traces, which Mr ElBaradei has called the most troubling aspect of Tehran's nuclear activities.
Iran insists the contamination, found in environmental samples taken by agency experts, was imported on equipment it uses for peaceful nuclear purposes and that it does not know the country of origin because the equipment was purchased through third parties.
The IAEA's board of governors meets on November 20th, and if it finds that suspicions remain about a possible weapons program, it could find Iran in violation of the Nuclear Nonproliferation Treaty. That would mean UN Security Council involvement and possible international sanctions.
Iran previously had insisted it would continue enriching uranium to non-weapons levels as part of a programne it says is aimed only at producing electricity.