Several Syrian cities witnessed on Monday mass protest demonstrations denouncing the Israeli aggression on the Freedom Flotilla with aid to Gaza in the international waters.

Xinhua correspondent at the UN Development Program (UNDP) headquarter in Damascus saw that Palestinian political organizations and Syrian national foundations organized a sit-in in front of the international organization.

The protestors waved flags of the Palestinians and political organizations and chanted against the Israeli bloody aggression.

They also expressed their solidarity stances with the people in Gaza, calling on the UN and the international community to put an end to the Israeli assaults against civilians.

The protestors also demonstrated in Daraa, Sweida, Aleppo and other Syrian cities, condemning the Israeli assault, the Syrian TV reported.

Israeli military navy attacked early Monday morning the international aid convoy Freedom Fleet in the international waters with live ammunition and gas bombs, causing 20 activists on board killed and over 30 injured, according to local media.

The fleet which left Cyprus Sunday to the Gaza Strip consists ships from Turkey, Greece, Ireland, Sweden, Algeria and Kuwait with humanitarian aids to the besieged people in Gaza.