TEHRAN, June 18 (RIA Novosti) - Iran rejects any preconditions in the talks on its nuclear program, Iranian Foreign Ministry spokesman Hamid Reza Asefi said Sunday.

Iran's nuclear program has been a source of major controversy since the beginning of the year, as many countries suspect the Islamic Republic of pursuing a covert weapons program under the pretext of civilian research, despite its claims to the contrary.

Asefi said negotiations were the only correct way to solve the Iranian nuclear program. He added that these negotiations must be open and without any preliminary conditions.

Asefi also said Iran continued to study nuclear proposals from six world powers to settle the Iranian nuclear problem.

The United States, France, Germany, Britain, Russia and China have agreed a package of incentives for Iran in return for its consent to stop its nuclear enrichment program. EU foreign policy chief Javier Solana presented the offer to Tehran during his visit to Iran June 6.

Asefi said Iran had set up special committees with the participation of the country's Atomic Energy Organization and Supreme National Security Council to study the proposals. He added Iran would declare its position on the proposals after their careful and serious study.