New York, April 27 (RHC)-- Iran's delegation of nuclear negotiators has arrived in New York to attend the 2015 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT). Iranian Foreign Minister Mohammad Javad Zarif heads the team, which left Tehran early on Sunday.

Reports said that Iran and the P5+1 group of countries will also hold deputy and expert-level talks over Tehran's nuclear work on the sidelines of the event. Zarif, who will deliver a speech at the event, is scheduled to hold separate meetings with U.S. Secretary of State John Kerry, EU foreign policy chief Federica Mogherini, and some foreign ministers of the P5+1 during the trip.

The latest round of talks between representatives of Iran and the P5+1 -- the United States, Russia, China, France, Britain, and Germany -- ended in Vienna on April 24th. The three-day talks were held with the aim of drafting the text of the Joint Comprehensive Plan of Action (JCPOA) based upon a mutual understanding reached in Lausanne, Switzerland, on April 2nd.