Iran's Assembly of Experts has finalized a decision on its new supreme leader, the semi-official Mehr news agency reported on Sunday.

A majority consensus over a successor to the late Iranian Supreme Leader Ayatollah Ali Khamenei has more or less been reached, Ayatollah Mohammadmehdi Mirbaqeri, a member of the Assembly, was quoted as saying.

But some obstacles remain to be addressed regarding the process, he said, adding that the work must be accurate to avoid controversy.

U.S. President Donald Trump said earlier that he must be personally involved in selecting Iran's next leader, the U.S. news website Axios reported Thursday.

On Feb. 28, Israel and the United States launched joint attacks on Tehran and several other Iranian cities, killing Khamenei, as well as many others, including some of the leader's family members, high-ranking military commanders and civilians.