Israeli security personnel remain on alert and scan the sky for an FPV drone in Metula, northern Israel. Monday. EPA-Yonhap

DUBAI — A ceasefire agreed between Iran and the United States in early April is very likely to end if Israeli attacks on Tehran-backed Hezbollah in Lebanon persist, Iranian state TV said on Monday, without providing further details.

Earlier, the Iranian state news agency Tasnim said Tehran was halting indirect negotiations with the U.S. after Israel ordered its troops to push deeper into Lebanon, complicating diplomatic efforts to end three months of war.

Tasnim said the Islamic Republic's negotiating team was stopping exchanging messages with Washington through mediators over attacks on Lebanon, where the U.S.-Israeli war against Iran has reignited Israel's conflict with Hezbollah.

There was no immediate confirmation of the reports from Iranian officials or comment from the U.S. or Israeli sides.