The Israeli military said a senior Hezbollah operative was captured in a naval raid in the northern Lebanese town of Batroun on Friday.
An official said special forces had apprehended the individual and taken them back to Israeli territory, in what was described as a “special operation”.
Lebanon’s state news agency said an “unidentified military force” arrived on the beach at dawn, raided a nearby building, and captured one person before leaving by speedboat.
The raid has prompted anger from Lebanese authorities, with the office for Prime Minister Najib Mikati saying he had instructed the foreign ministry to submit a complaint to the UN Security Council.