Donald Trump has vowed to respond after accusing Iran of shooting down a US military helicopter, according to Channels Television.

The incident reportedly involved an Apache helicopter downed while patrolling the Strait of Hormuz, marking the second confirmed loss of a crewed US aircraft during the ongoing conflict. The US earlier acknowledged the loss of an F-15 fighter jet in April.

Trump said he had been informed that Iranian forces struck the helicopter during operations over the strategic waterway, although the crew survived without injuries. He insisted the United States would “respond” to what he described as an attack.

Iranian officials have not directly confirmed the incident in the report, but senior figures in Tehran issued warnings against what they called breaches of commitments by Washington. Iran’s parliament speaker Mohammad Bagher Ghalibaf said diplomacy remained an option but cautioned that any escalation would be met with a strong response.

The exchange comes amid fragile ceasefire conditions following months of hostilities involving Israel, Iran and allied groups across the region. The Strait of Hormuz, through which a significant share of global oil supplies passes, has remained a key flashpoint throughout the conflict.

Trump also suggested that wider peace negotiations were approaching conclusion, claiming that both Iran and Israel had signalled agreement through US mediation. However, officials on both sides have continued to warn that fighting could resume if conditions are not met.

Oil markets reacted quickly to the developments, with prices easing as investors monitored the potential for further escalation in the Middle East.

Channels Television reported that this is the latest in a series of military exchanges raising tensions between Washington and Tehran, as diplomatic efforts continue alongside battlefield developments.