Israeli naval forces captured a senior Hezbollah operative in north Lebanon, an Israeli military official said Saturday, as the conflict between the Iran-backed group and Israel showed few signs of easing.

Earlier on Saturday, Lebanese authorities said it was investigating whether Israel was behind the capture of a Lebanese sea captain who was taken away by a group of armed men who had landed on the coast near the northern town of Batroun on Friday.

“The operative has been transferred to Israeli territory and is currently being investigated,” the military official said, without providing the name of the person in detention.

The operation marks the first time Israel has announced it deployed troops deep into northern Lebanon to take a senior Hezbollah operative captive since the conflict between the two sides escalated in late September. Since then, Israeli forces began a ground invasion of southern Lebanon and intensified its airstrikes across the country, including southern Beirut and the eastern Bekaa valley, killing most of Hezbollah's senior commanders.

Hezbollah issued a statement describing what happened as a “Zionist aggression in the Batroun area.” The statement did not give details or confirm whether a Hezbollah member was captured by Israel.

Two Lebanese military officials confirmed to The Associated Press that a naval force landed in Batroun, about 30 kilometers (18 miles) north of Beirut, and abducted a Lebanese citizen. Neither gave the man’s identity or said whether he was thought to have links to Lebanon’s Hezbollah group. They did not confirm whether the armed men were an Israeli force.

Three Lebanese judicial officials told AP the operation took place at dawn Friday, adding that the captain might have links with Hezbollah. The officials said an investigation is looking into whether the man is linked to Hezbollah or working for an Israeli spy agency and an Israeli force came to rescue him.

Both the military and judicial officials spoke on the condition of anonymity as they were unauthorized to share details about the incident or the ongoing investigation.

Soon after Israel went public about the operation, Lebanese Prime Minister Najib Mikati called on Lebanon’s foreign minister to file a complaint against Israel at the U.N. Security Council.

Israel has carried out in the past commando operations deep inside Lebanon to kidnap or kill Hezbollah and Palestinian officials.

Recounting the event, Lebanese residents from the apartment building where the man was seized said the armed group introduced themselves as state security.

“We were terrified. They were breaking into the apartment next to ours,” Hussein Delbani told The Associated Press near where the man was captured. “I thought a state agency was doing a security operation,” said Delbani, who was displaced from south Lebanon a month ago when the Israel-Hezbollah war erupted.

He said he saw from his balcony people down on the coast and they screamed again for him to go inside.

Hamie told Al-Jadeed the man was a captain of civilian ships. He graduated in 2022 and in late September joined the Batroun's Maritime Sciences and Technology Institute for additional courses. Hamie said that the man lived some 300 meters (980 feet) from the institute.

Hamie's remarks came shortly after two Lebanese journalists posted a video on social media showing what appeared to be about 20 armed men taking away a man from in front a house, his face covered with his shirt.

Kandice Ardiel, a spokesperson for the U.N. peacekeeping force deployed in south Lebanon, denied allegations by some local journalists who said that the peacekeepers helped the landing force in the operation. The U.N. mission, known as UNIFIL, has a maritime force that monitors the coast.

"Disinformation and false rumors are irresponsible and put peacekeepers at risk,” Ardiel said.

Hezbollah began firing rockets, drones and missiles from Lebanon into Israel in solidarity with Hamas immediately after the Hamas-led Oct. 7, 2023, attack on Israel, which triggered the war in Gaza. The yearlong cross-border fighting boiled over to full-blown war on Oct. 1, when Israeli forces launched a ground invasion of southern Lebanon for the first time since 2006.