A senior Iranian nuclear negotiator expressed the hope that the initial draft of a comprehensive nuclear deal will be ready in the next few days, Press TV reported on Saturday.

Representatives of Iran and the world major powers have officially started drawing up the draft of a final nuclear agreement, and experts from Iran and the six global powers are examining the details, Top Iranian nuclear negotiator Abbas Araqchi was quoted as saying.

"It will be a tough task. This first draft will be full of disputed issues and will include parentheses and brackets, and decisions should be made about them in the future," Araqchi said on the sidelines of the ongoing 2015 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) in New York.

Iran and the P5+1 group, namely the United States, Britain, France, Russia, China, seek to reach a draft agreement in New York no matter how many days it will take, the Iranian official said, adding the next round of talks would continue in Europe.

On April 2, Iran and the P5+1 group reached common understanding on outstanding issues ahead of the June 30 deadline for a comprehensive deal.