Iraqi Prime Minister Mustafa Al-Kadhimi vowed to resign if the political situation in the country continues to worsen, Report informs, citing the Al-Hadath television channel.
"If the situation becomes more complicated, I will announce my resignation as prime minister of Iraq in due course," he said in an address to the Iraqi people.
On Monday, al-Kadhimi suspended cabinet sessions until further notice after protesters broke into the government headquarters.
After al-Sadr announced he would resign from politics, there was a wave of protest from his followers who converged on the Green Zone.
They eventually breached the gates of the government palace. Militants had fired rockets and machine guns inside Baghdad's high-security Green Zone on Tuesday, Iraq's military said.
Troops had responded with sporadic returns of fire, security officials said. The violence between rival Shiite Muslim groups has killed more than 20 people since it broke out on Monday. At least 380 people were also reported to have been injured.