Iran and the P5+1 group of world powers will resume negotiations to draw up a final agreement on Tehran�s nuclear program within days, Catherine Ray, spokesperson for EU foreign policy chief, Federica Mogherini, says.

At a press briefing in Brussels on Friday, she added that the negotiating sides were maintaining contact by phone and e-mail.

Ray said she would inform the media on the exact day of the talks as soon as it has been agreed upon.

She emphasized that the European Union is trying hard and playing an intermediary role in the negotiations.

The comments came a day after Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei said it is the very specifics of the nuclear negotiations between Iran and six world powers that would determine the fate of the talks.

�Everything lies in the details,� said the Leader in an�address on Thursday.

Ayatollah Khamenei further underlined that any deal would have to �ensure the interests and dignity of the [Iranian] nation.�

Iran and five permanent members of the UN Security Council � the US, Britain, France, Russia and China -- plus Germany along with officials from the European Union reached a mutual understanding on Tehran�s nuclear program after eight days of marathon talks in Switzerland on April 2.

The two sides will now work on drawing up a final accord by the self-designated June 30 deadline.

By Press TV