Protesters blocked several bridges in the city of al-Nasiriyah on Saturday morning, Arab media reported.
On Saturday morning, renewed gunfire was reported near the police headquarters in Dhi Qar province.
On Friday, there were bloody incidents in Iraq, where seven demonstrators were killed and 42 wounded in the southern province of Najaf.
Sky News said 15 protesters were killed and 157 wounded in clashes with security forces in Dhi Qar province in southern Iraq on Friday.
Dhi Qar police chief and deputy governor of Najaf both submitted their resignations because of the protests.
The Iraqis went out to celebrate in Tahrir Square in central Baghdad, following the decision of Iraqi Prime Minister Adel Abdul Mahdi to resign to parliament, and the demonstrators said that his decision does not fulfill all their demands, but the first.
In a related context, the leader of the Sadrist movement, Muqtada al-Sadr, a referendum on five candidates, to choose a prime minister.
Abdul Mahdi announced his intention to resign in a statement hour after Shiite cleric Ali al-Sistani condemned the use of lethal force against protesters and urged lawmakers to reconsider their support for the government.