Representatives from Iran and the P5+1 group of countries have opened the second day of a new round of nuclear talks in the Austrian capital,�Vienna.

The nuclear negotiations on Thursday were held at two different levels in the Austrian capital city.

In the expert-level discussions, nuclear-expert negotiators from the two sides took up�issues surrounding Iran�s nuclear program.

In the higher-level talks, Iranian deputy foreign ministers�Abbas Araqchi and Majid Takht-e-Ravanchi�held nuclear talks with European Union Deputy Foreign Policy Chief Helga Schmidt, who represents the six countries.

The negotiators had held similar talks in Vienna a day before. There has been no report on�the details of the talks yet.

The negotiations, which are expected to continue until Friday, could later be also attended by top American, Russian, Chinese, British, and German officials.

The talks are being held with an eye on�hammering out a final agreement between Iran and the P5+1 countries -�the US, France, Britain, China, Russia and Germany- on Iran's nuclear program.

Iran and the P5+1 also�held nuclear talks in Vienna earlier in the month.

The two sides held another�round of negotiations in New York from April 27 to May 5. During the New York talks, the two sides first began working on the draft of a potential comprehensive agreement.

During the last two rounds of the talks - in Vienna and New York, the two sides worked on the text of the potential deal in order to narrow their differences and prepare a cleaner text.

Iran and the P5+1 countries - the US, Britain, France, Germany, China and Russia � have been negotiating to reach a comprehensive agreement over Iran�s civilian nuclear activities, and have set June 30 as the deadline for the conclusion of the deal.

The possible deal would see the removal of the sanctions imposed on the Islamic Republic in return for enhanced transparency by Iran in its nuclear program.

The sides reached a mutual understanding on the parameters of the Joint Comprehensive Plan of Action (JCPOA) - as the potential deal is called - in the Swiss city of Lausanne on April 2.

By Press TV