Tehran and the International Atomic Energy Agency continue technical discussions opening since May 11.
Director for safeguards operations Herman Nackaerts and Iran's ambassador to IAEA Ali Asghar Soltaniyeh run the meeting, reported ISNA.
Tehran has hosted two other rounds of discussions beginning on 21 and 29 of April when safeguards deputy Ollie Heinonen took part in the talks.
Not giving information to the media about the outcome of the talks Iranian officials say ElBeradei's June report over Iran will be containing data from the discussions.
International atomic watchdog has announced Iran has decided to cooperate with the agency over the alleged studies.