Dozens of police officers were injured in clashes with protesters as well, according to the broadcaster Al Sumaria.
Protest actions began in southern Iraq about a week ago in the port city of Basra. The situation worsened after the death of a demonstrator last Sunday protesting against unemployment and deterioration of the situation in the communal sector.
According to the broadcaster, earlier on Friday, protesters broke into the international airport in the Iraqi city of Najaf and also seized a provincial administration building. Iraq's state television reported later, however, that the protestors had withdrawn from the airport and air traffic had resumed.