File Photo: Foreign Minister Maxime Prevot
Israel's far-right national security minister Itamar Ben Gvir posted the video showing the activists kneeling with their hands tied and foreheads on the ground, sparking international condemnation.
It was published after Israeli forces intercepted the flotilla's vessels at sea and began detaining hundreds of foreign activists at the southern port of Ashdod.
"Belgian citizens are among those detained. This situation is unacceptable. It violates the most basic standards of human dignity. All detainees must be treated with dignity and released without delay," Prevot wrote on X.
The Belgian minister said he asked the Israeli envoy to Belgium be summoned "to express our indignation and ask for explanations".
He also criticised the "catastrophic" humanitarian situation in Gaza, which "demands the full attention of the international community".
During the war on Gaza, the Palestinian territory suffered severe shortages of food, medicine and other essential supplies, with Israel at times halting aid deliveries entirely.
Short link: