Iran rejected taking part in the second round of talks with the United States, the state-run Islamic Republic News Agency (IRNA) reported on Sunday.
"Iran stated that its absence from the second round of talks stems from what it called Washington's excessive demands, unrealistic expectations, constant shifts in stance, repeated contradictions, and the ongoing naval blockade, which it considers a breach of the ceasefire," the IRNA said.
The IRNA also accused the US of playing a "blame game," lying about Iran's participation in a second round of talks in order to put pressure on the country.
Trump accuses Iran of violating ceasefire, says peace deal will be made
Earlier on Sunday, US President Donald Trump said that Iran has committed a "serious violation" of the ceasefire but still thinks he can get a peace deal, ABC News reporter Jonathan Karl posted on X/Twitter.
Trump previously wrote in a post on Truth Social that US representatives are going to Islamabad, Pakistan, "tomorrow night" for Iran negotiations, with a White House official later confirming to The Jerusalem Post that US Vice President JD Vance, special envoy Steve Witkoff, and Trump's son-in-law Jared Kushner would lead the delegation heading to Pakistan.
Reuters contributed to this report.
This is a developing story.