SIDI BOU SAID, Tunisia: The organizers of a Gaza-bound flotilla carrying humanitarian aid and pro-Palestinian activists said late Monday that one of their boats was hit by a suspected UAV but Tunisian authorities said “no drones” had been detected.

The flotilla, which aims to deliver aid to Gazans in defiance of Israel’s blockade, arrived in Tunisia over the weekend and was anchored 50 miles from the port of Sidi Bou Said when it reported the incident.

“The Global Sumud Flotilla (GSF) confirms that one of the main boats... was struck by what is suspected to be a drone,” the organizers said on social media, adding no one had been hurt.

The boat was in Tunisian waters when a fire broke out onboard and was quickly extinguished, according to an AFP journalist who arrived shortly after the flames had been doused.

Houcem Eddine Jebabli, a spokesman for Tunisia’s national guard, said their investigation was “ongoing” but “no drones have been detected.”