The information is reported by the AP News Agency, citing Iraqi authorities.
Yesterday, 13 people were stabbed at the demonstration-filled Tahrir Square in the city, even then by unknown perpetrators.
The protests in Iraq have been going on for two months, and over 400 people have died. Prime Minister Adil Abd al-Mahdi's resignation application, submitted a week ago, was approved by Parliament on Sunday and now the country is awaiting a new government.