Iran official: Inspectors will no longer have access to nuclear sites images

• If the monitoring agreement ends, Iranian officials could erase all recordings of the country's nuclear activity, effectively leaving inspectors unable to scrutinize work at the sites, per the Guardian.

Driving the news: The IAEA and Iran reached an agreement in February that allowed UN inspectors to continue necessary verification and monitoring of the country's nuclear facilities for up to three months.

• "Based on the expiration of the three-month deadline, definitely the International Atomic Energy Agency will not have the right to access images from May 22," Qalibaf said.

The big picture: Iran stepped up its enrichment efforts by building centrifuges and enriching nuclear materials to levels that violated the deal after former President Trump withdrew the U.S. from the international agreement in 2018.

What to watch: IAEA head Rafael Grossi, who's been in talks with Iranian officials to extend the monitoring deal, was due to hold a news conference later Sunday, Reuters reports.

Go deeper: U.S. and Iran remain far apart as nuclear talks reach critical stage