LAUSANNE (Sputnik) — The source did not specify a further schedule, saying "it is simply not clear."
"Right, there are no meetings at the moment," the source told Sputnik.
Iran and the P5+1 countries — Russia, the United States, the United Kingdom, France, China and Germany are negotiating in Lausanne, Switzerland the deal that would ensure the peaceful nature of Tehran's nuclear program.
Tuesday was the deadline for the negotiators to hammer out an agreement but the talks continued into the night and resumed on Wednesday.
German Chancellor Angela Merkel said earlier in the day that a significant progress toward reaching the deal was achieved.
Iran and the international mediators have been in talks since November 2013 trying to broker the agreement. The self-imposed deadline for the final deal is July 1, 2015.
