Iran’s assassination threats against Donald Trump have loomed over the president in recent days and are more serious than publicly reported, an upcoming book claims.

Iran's threat to assassinate Donald Trump during the 2024 campaign was far more serious than publicly known — and led to extraordinary precautions by his team that included using a decoy plane to avert a feared attempt on his life.

A new book details Donald Trump’s paranoia during his 2024 presidential campaign over a potential assassination threat from the Iranian Revolutionary Guard. Reports that Iranian operatives had access to surface-to-air missiles led Trump and his advisers to use his staff as a decoy in a plane switcheroo, according to Politico’s Alex Isenstadt.

US authorities obtained intelligence from a human source in recent weeks on a plot by Iran to try to assassinate Donald Trump, a development that led to the Secret Service increasing security around the former president, multiple people briefed on the matter told CNN.

There’s no indication that Thomas Matthew Crooks, the would-be assassin who attempted to kill the former president on Saturday, was connected to the plot, the sources said.

The U.S. government is intensifying a manhunt for an Iranian intelligence operative whom the Federal Bureau of Investigation believes has been plotting to assassinate current and former American officials, including one-time Secretary of State Mike Pompeo.

The FBI’s Miami field office on Friday issued a public alert seeking information on Majid Dastjani Farahani, a suspected member of Iran’s Ministry of Intelligence and Security, whom the Bureau alleged has been recruiting “individuals for operations in the U.S., to include lethal targeting of current/former USG officials.”

Twin explosions at a ceremony honoring the fourth anniversary of the U.S. killing of top Iranian commander Qassem Soleimani killed at least 103 people, Iranian state media reported Wednesday.

Around 170 others were injured in the bombings. The source of the explosions is so far unclear, but Iranian officials have alleged that the blasts were connected to terrorism, state media reported.

The United States has quietly resumed indirect talks with Iran in an effort to constrain Tehran’s nuclear program, multiple sources told CNN.

The talks resumed late last year, months after an effort to revive the Iran nuclear deal collapsed. The Trump administration withdrew from the landmark agreement in 2018 and Iran has increasingly grown its nuclear program in violation of the deal, formally known as the Joint Comprehensive Plan of Action (JCPOA).

The United States is holding talks with Iran to sketch out steps that could limit the Iranian nuclear programme, release some detained U.S. citizens and unfreeze some Iranian assets abroad, Iranian and Western officials said.

These steps would be cast as an "understanding" rather than an agreement requiring review by the U.S. Congress, where many oppose giving Iran benefits because of its military aid to Russia, its domestic repression and its support for proxies that have attacked U.S. interests in the region.

The White House has restarted talks with Iran in an effort to win the release of US detainees and limit Tehran’s nuclear program.

Biden administration officials have traveled to Oman for indirect discussions with their Iranian counterparts at least three times since December, when senior US and Iranian diplomats made contact in New York, the Wall Street Journal reported Wednesday.

With the anniversary of the U.S. drone strike that killed a top Iranian general approaching, there remains a "heightened risk" of an Iranian threat to American interests in the Middle East, the top U.S. general in the Middle East told ABC News in an interview. But Gen. Kenneth "Frank" McKenzie also downplayed that a conflict between the U.S. and Iran is more likely.

McKenzie made his comments a day after the U.S. Navy gave the rare acknowledgement that a U.S. submarine had entered the Persian Gulf, a move widely seen as sending a message to Iran.