OREANDA-NEWS. Negotiators from the P5 + 1 and Iran are not expected to meet a 30 June deadline to conclude talks over Tehran's nuclear program, the White House said today.

"At this point, we anticipate that the negotiations will continue for at least a couple of days after the deadline," the White House said, adding that the need to extend the deadline "is not surprising or uncommon."

US negotiators will remain in Vienna as the talks continue. Administration officials did not identify what issues remain outstanding. The terms of an existing interim agreement will remain in place as the negotiations continue.

During the nuclear talks, Iran's oil exports have been limited to 1-1.1mn b/d. Iran produced 2.8mn b/d in May and was tied with the UAE as Opec's third largest oil producer.

The US and its negotiating partners, the UK, France, Germany, Russia and China, are trying to reach a comprehensive agreement with Iran that would swap sanctions relief for nuclear concessions.

US House of Representatives' Foreign Affairs Committee chairman Ed Royce (R-California) said extending the talks "is worth it only if we are moving toward greater restraints on Iran's perilous nuclear aspirations and absolutely blocking its paths to the bomb, not more concessions" from the US.

Royce said Congress has a series of "red lines" for the talks, including an insistence that Iran's Revolutionary Guard Corps does not enjoy a "sanctions relief jackpot."