Protesters died during Sunday’s rallies. Morocco’s Interior Ministry said 120 demonstrators were also arrested during clashes with security forces.
The developments come as popular power revolutions continue to sweep US-backed autocratic regimes across the Middle East and North Africa.
Protesters demand the Moroccan King give up some of his powers and clamp down on government corruption.
The protest was initiated by a group calling itself the February 20 Movement for Change. Tens of thousands of people voiced support for the rallies.
In an attempt to head off serious unrest, the Moroccan government has promised to boost subsidies for staples whose prices have sharply risen in recent.
Human rights and civil groups as well as independent journalists have joined the movement.
They are demanding constitutional reforms that would reduce King Mohammed’s powers and make the justice system more independent.