NGO claims activist aid ship hit by drones while trying to sneak into Gaza

The NGO published video footage, filmed in darkness, showing a fire on one of its ships, the Conscience. The footage showed lights in the sky in front of the ship and the sound of explosions could be heard.

"Israeli ambassadors must be summoned and answer to violations of international law, including the ongoing blockade (of Gaza) and the bombing of our civilian vessel in international waters," it said.

The Maltese government said maritime authorities had received a mayday call shortly after midnight local time from a vessel outside of territorial waters, with 12 crew members and four civilians on board, reporting a fire.

It said a nearby tug headed to the scene and launched firefighting operations and a Maltese patrol vessel was dispatched. After several hours, the vessel and its crew were secure, it said, adding that crew had refused to board the tug.