"We believe we've reached this point where we're close," National Security Council spokesman John Kirby told reporters, adding however that "we're not there yet."

"We believe that the trajectory of this is going in a very positive direction -- but again nothing is done until everything is done, nothing is negotiated until everything is negotiated."

Kirby said it would be "irresponsible" to confirm press reports about the contents of any deal, adding that he did not want to do "anything that might torpedo our chances."

President Joe Biden had been monitoring the progress of ceasefire talks "very closely" and had been in direct contact with US envoy Amos Hochstein, who visited the region last week, he added.

Kirby would not confirm reports in Saudi media that Biden and French President Emmanuel Macron were set to announce a deal on Tuesday, saying only that the two leaders spoke on the Israel-Hezbollah conflict last week.

The negotiations for a ceasefire between Israel and Lebanon have been marked by intense diplomatic efforts amid escalating hostilities.

Mediated by international actors, including the United States and France, the talks aim to stop Israeli attacks on Lebanon which have killed over 3,768 Lebanese people in increasingly violent attacks on areas inhabited by civilians. 

Saudi news outlet Al-Sharq Al-Awsat reported that the proposed 60-day ceasefire includes two main verifiable measures.

Hezbollah would withdraw its forces from the area between the Blue Line and the Litani River, while Israel would retreat from territories occupied during its recent limited ground incursions.