Marathon meetings between the Iranian and the US negotiators have been concluded after 15 hours as the talks are going to be held on Sunday for the second consecutive day.

The Iranian negotiation delegation headed by Parliament Speaker Mohammad Baqer Qalibaf (left) consults following the first phase of negotiations with the US delegation in Islamabad, April 11, 2026.

Iranian officials began talks at 13:00 local time on Saturday at the Serena Hotel in Islamabad, Pakistan, first with Pakistani officials and then with the American delegation.

The marathon of talks continued until 3:40 am local time on Sunday.

The talks are scheduled to continue for a few more hours on Sunday.

that "given the demands made by the American side and the Iranian delegation`s insistence on preserving national interests, with the proposal of the Pakistani side and the acceptance of both sides, the talks will continue for another round on Sunday.

That came as some serious differences between the Iranian and American delegations in the talks still remain.

The Iranian delegation participated in the talks following a decision by the United States to release frozen Iranian assets and force the Israeli regime to end its aggression on Lebanon.

This was one of Iran`s demands in its 10-point plan, which Tehran had previously presented to Washington through intermediaries as part of its response to a US proposal for a ceasefire.

According to the statement issued by Iran`s top security body on Wednesday, the United States agreed to a 10-point proposal that calls for no new aggression against Iran, continued Iranian control over the Strait of Hormuz, acceptance of uranium enrichment, removal of all primary and secondary sanctions, termination of all anti-Iran UN Security Council resolutions as well as IAEA Board of Governors resolutions, payment of compensation to Iran, withdrawal of US combat forces from the region and cessation of war on all fronts, including against the Islamic Resistance of Lebanon (Hezbollah).

US President Donald Trump called the plan "a workable basis on which to negotiate."

The 10-point proposal was also submitted to Islamabad ahead of the talks as the basis for negotiations between the two sides.

Iran and the US agreed to a two-week ceasefire on Tuesday, 40 days after the US and Israel launched attacks against the Islamic Republic as Tehran was negotiating with Washington over its nuclear program.

Iran responded forcefully to the aggression, targeting US and Israeli assets across the region and enforcing a near-total blockade on the Strait of Hormuz. The transit through the vital waterway is one of the main topics of discussion in the negotiations in Islamabad, which focus on a potential agreement to permanently end the war.

The cessation of Israeli attacks on Lebanon was another precondition Iran had set for the talks. The issue was part of Iran`s proposal that led to the ceasefire, but the US and Israel later said the Lebanese front was not included. Pakistan also confirmed that it was.

Reports suggested that Israel had ceased attacking the Lebanese capital Beirut and restricted its attacks to areas in southern Lebanon.

The Iranian negotiating team met with Pakistani Prime Minister Shehbaz Sharif in Islamabad earlier in the day ahead of talks with the United States.

Other Iranian officials on the delegation include Secretary of the Supreme National Defense Council, Ali-Akbar Ahmadian, and Governor of the Central Bank, Abdolnasser Hemmati, as well as some members of the Parliament.

US Vice President JD Vance also met with the Pakistani prime minister in Islamabad. Vance was joined for the bilateral meeting by special envoy Steve Witkoff and President Donald Trump`s son-in-law, Jared Kushner.