According to reports, a criminal court in the province of Wasit, located in the east of the country sentenced the major of the Iraqi military rapid reaction force Malek, accused of killing demonstrators.
Another Iraqi officer was sentenced to seven years in prison.
Officers were charged with the murder of two participants in anti-government protests.
Protests in Iraq have not stopped since early October, as protesters are dissatisfied with worsening living conditions, high youth unemployment and corruption.
Iraqi Prime Minister Adel Abdel Mahdi announced on Friday his intention to resign