IS executed a Lebanese man from the northeastern town of Arsal Thursday, according to the National News Agency.
The state-run agency said the victim has been identified as Kayed Ghadadah.
Security sources told The Daily Star that Ghadadah was kidnapped last week from his house in north Arsal and was taken to the town's outskirts close to the Syrian border.
Media reports are indicating that IS executed Ghadadh for his ties to Hezbollah.
Last week, a video surfaced on social media showing two Syrians held by a radical group saying they, along with Ghadadah, were recruited by Hezbollah to ignite strife between the Lebanese Army, Syrian refugees and the jihadists who have infiltrated the border in light of the battles in Qalamoun, a mountainous region bordering Lebanon.
The two men, who appeared in the video posted by a YouTube channel called "The Network of the White Minaret's Correspondents," identified themselves as Mohammad Abdo Araj and Mohammad Mahmoud Abdel-Nabi.
The two said Hezbollah trained them on the use firearms and how to plant bombs, and asked them to coordinate with each other to attack an Army post. One of the men also alleged that the party had killed a Lebanese soldier who sought to defect from the Army.
Ghadadah's name first appeared in a security report last year that stated that he, along with Palestinian Sheikh Abu Ammar Toufic Hijazi, was involved in rigging vehicles to be detonated in the Bekaa Valley town of Arsal.
The classified report, which was circulated among security agencies, said that the Nusra Front had rigged a white Mercedes 300 with a fake license plate, along with a gray Nissan Patrol jeep.
