The indication has raised fears more hostages may be dead than publicly known.
Several people believed if they weren't killed while attempting to get flour, they would die of hunger instead.
The Foreign Affairs Minister says the world needs to act to halt the ongoing humanitarian catastrophe.
Progress on a deal has been stalled for weeks.
Aid workers were killed after their convoy was attacked by Israeli forces.
Thousands of Israelis have taken to the streets in recent days demanding new elections.
The decision comes after the killing of staff working for the World Central Kitchen food charity.
Iran officials are blaming Israel for the attack.
The U.N.-backed global authority on food security warned earlier this month that famine was likely to occur by May in northern Gaza