US President Joe Biden has demanded that Iranian authorities stop plotting against Donald Trump.
The US National Security Council has warned Tehran that any attempt on the life of the former president and senior officials will be considered an act of war.
Former National Security Advisor John Bolton, former Secretary of State Mike Pompeo, and the Trump administration's special representative for Iran Brian Hook have received threats from Iran, Politico writes.
The US said that Pompeo and Hook are under government protection.
Biden said the US had committed all resources to ensuring Trump's safety.
According to him, this issue is a priority for internal security.
The threats to Trump may be linked to Tehran's desire to avenge the death of General Qasem Soleimani, who was killed in a US airstrike in early 2020.
The White House's reaction is primarily related to its reluctance to have new conflicts both within the country and in the international arena.
