NEW : A curfew is imposed in the greater Tunis area . The U.N. human rights commissioner says the deaths will be investigated . The prime minister will not say if police used live ammunition on demonstrators . Tunisian President Zine El Abidine Ben Ali has fired Interior Minister Rafik Belhaj Kacem , the government announced Wednesday , in the wake of the deadly protests over high unemployment and poor living conditions . About 200 people died in the riots , the commissioner says , rejecting higher claims .
NEW : A curfew is imposed in the greater Tunis area . The U.N. human rights commissioner says the deaths will be investigated . The prime minister will not say if police used live ammunition on demonstrators . About 200 people died in the riots , the commissioner says , rejecting higher claims .