"At the moment some European companies have started unofficial talks for Iran to join this pipeline," Mehr quoted Reza Kasaizadeh, managing director of National Iranian Gas Exports Company, as saying.
He gave no details.
The European Union is planning to build the 3,300-kilometre (2,050-mile) Nabucco pipeline to transport gas from the Middle East and Central Asia to its energy-hungry consumers in Europe while bypassing Russia.
Critics have said that if the Nabucco project is to be profitable it will definitely need gas from Iran, which holds the world's second largest gas reserves but is also subject to international sanctions over its sensitive nuclear programme.
Even though importing gas to cover domestic needs, Iran has repeatedly insisted that the Nabucco plan will not succeed without its vast, untapped gas reserves.
Iran imports 25 million cubic meters (883 million cubic feet) a day of gas from Turkmenistan and plans to increase it by eight million cm (282.5 million cubic feet) in the coming months.
It exports around the same amount to Turkey.
The nation of 70 million people on has faced gas shortages due to high consumption, especially in winter. The high demand has led Iran to cut gas supply to Turkey several times in the past.
