The proposed deal leaves key disputes unresolved, including Iran's nuclear programme and frozen assets, while Tehran continues to seek funds release and a Lebanon ceasefire.
Trump's statement, however, ran counter to Iran's foreign ministry, which indicated earlier in the day that the deal would not be signed Sunday, according to state media reports.
President Donald Trump in a Truth Social post on Friday stated that the terms Iranians have officially stated as part of a proposed ceasefire deal is not what was agreed to by the US.
There was no immediate reaction from Iran, but the Fars news agency reported citing a source that "no text has been approved for a preliminary memorandum of understanding with the US."
President Donald Trump said that as the bombing was underway Iranian leaders called him directly in the White House Situation Room and asked him to halt the attack, Fox News reported.
Fighter jets from the U.S. Air Force and Navy conducted the strikes in Iran, the U.S. military's Central Command said, targeting "air defense, ground control stations, and surveillance radar sites."
