Pro-Palestinian group Freedom Flotilla Coalition (FFC) says Israeli troops have boarded a boat that was trying to bring food aid to the Gaza Strip by sea, BBC reported.
It said the Handala vessel was intercepted in international waters.
Video footage purportedly showed activists on board with their hands up as several armed soldiers took control of the vessel.
The Israeli foreign ministry said the country's navy stopped the boat "from illegally entering the maritime zone of the coast of Gaza" and breaking the blockade there, according to BBC.