Iran will make amendments to the text of a potential memorandum of understanding (MoU) with the United States after receiving the latest US response, the semi-official Tasnim news agency reported on Sunday.

Reacting to Saturday US media reports that the United States amended elements of the draft agreement and sent it back to Tehran, Tasnim quoted an informed source as saying that Iran will also make its own amendments to the draft deal, and "nothing is final yet."

The source said Iran will only accept a draft it agrees to, and the amendments made by the United States do not imply Tehran's approval.

US media, citing officials, said US President Donald Trump raised concerns over parts of the draft, including the release of Iran's frozen assets, and wanted tougher terms in the MoU, especially on Iran's nuclear material.

Iran and the United States are reportedly working to finalize an MoU on ending the war that started on February 28 with joint attacks by the United States and Israel against Iran.

The two sides reached a temporary ceasefire on April 8. Over the past weeks, they have exchanged several proposed plans outlining conditions for ending the conflict through Pakistani mediation.