"Contrary to the atmosphere being created by artificial media warfare, the formation of a structure for #negotiations is under way," Larijani wrote, without giving further details.
US President Donald Trump said on January 22 an "armada" was heading toward Iran.
Multiple sources said on Friday that Trump was weighing options against Iran that include targeted strikes on security forces.
Trump told Fox News correspondent Jacqui Heinrich that Iran was "negotiating, so we'll see what happens," Heinrich wrote on X.
"You know, the last time they negotiated, we had to take out their nuclear, didn't work, you know. Then we took it out a different way, and we'll see what happens," Heinrich quoted Trump as saying.
Iranian President Masoud Pezeshkian on Saturday accused US, Israeli and European leaders of exploiting Iran's economic problems, inciting unrest and providing people with the means to "tear the nation apart".
Iran has been rocked by protests that erupted in December over economic hardship and have posed one of the toughest challenges to the country's clerical rulers.
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