According to the NDTV mediators between the warring sides are seeking technical talks to overcome the most contentious issues preventing an agreement that would extend beyond next week, when an initial truce will expire, said the person, who asked not to be identified discussing sensitive matters. Those include the reopening of Hormuz and the future of Iran's nuclear program.
Fighting between the US and Iran has been on hold since about April 8, shortly after a two-week ceasefire was announced by US President Donald Trump the previous evening. An initial round of peace talks was held in Pakistan last weekend, though participants including US Vice President JD Vance departed without a deal.
Pakistan's military said a delegation from the country arrived in Iran on Wednesday, with Islamabad continuing to mediate the exchange of messages between the two sides.
While Israel joined the US in halting attacks on Iran last week, its military kept up attacks against Tehran-backed Hezbollah in Lebanon, a move that has complicated the broader push for peace.
Talks between Israel and Beirut began Tuesday in Washington to address the parallel conflict, which has killed more than 2,000 people and displaced a million more, according to Lebanese authorities.