President Donald Trump said on Tuesday that two pilots were uninjured after reports that a US military helicopter went down near the Strait of Hormuz.
It was not immediately clear whether the Apache helicopter was shot down, experienced mechanical failure or encountered some other problem, the New York Times reported, citing two people briefed on the incident.
"The pilots are fine, yeah. Nobody injured," said Trump, speaking to reporters before departing New York after attending an NBA finals game.
"We are going to issue a report on that tomorrow," he added, without commenting on what may have caused the incident.
The incident happened a day after Iran and Israel said they had halted attacks on each other following an appeal from Trump, though Tehran warned it would resume hostilities if Israel continued to hit Hezbollah in Lebanon.
Trump also said on Tuesday that negotiators were in the "final throes" of talks for a peace deal in the Middle East, after Iran and Israel halted fresh hostilities that threatened to reignite the months-long war.
The resumption of the tenuous ceasefire comes as Washington tries to reach an agreement with Tehran to end their more than three-month-old war.
Trump also told reporters he could have "an idea" for an Iran deal within a few days, without elaborating. The Republican president, struggling with record low approval ratings ahead of November midterm elections, has often hinted at an imminent deal with Tehran, but none has yet eventuated.
The weekend saw the most direct confrontation between Iran and Israel since a ceasefire in April.
Tehran had fired missiles towards Israeli territory late on Sunday, calling the strikes retaliation for attacks on the Hezbollah on the outskirts of Beirut.
Israel then hit Iranian air defence systems and a petrochemical plant that it said was used to produce ballistic missiles. Iran's Islamic Revolutionary Guard Corps said it retaliated with a strike aimed at a similar Israeli plant in the city of Haifa.
No deaths were reported by authorities on either side.
