The Iraqi Security Media Cell said on Twitter today, 29 August, that all demonstrators must withdraw from the Green zone immediately.
Meanwhile, Iraqi Joint Operations Command announced a "total curfew" in Baghdad today starting from 1530, the Sumaria news website reported.
The media cell said the security forces have "adhered to the highest levels of self-restraint and tolerant behaviour to prevent clashes and Iraqi bloodshed."
It added that "the security forces affirm their responsibility to protect government institutions, international missions, and public and private properties."
Sumaria news website said that protestors have entered the Presidential Palace in the Green Zone.
Local media also reported demonstrations in Iraq's second biggest province of Basra following Sad's resignation.

'Leaving politics for good'
The leader of the Sadrist Movement, Moqtada al-Sadr, said in a tweet today that he is leaving politics and shutting down all political institutions in response to Iraq’s political deadlock.
He added that all Sadrist movement's institutions would be closed except for the Shrine of Ali al-Sadr, the Sadr Museum, and the Sadr family's heritage group.
Sadr wrote: "If I died or got murdered, I ask for your prayers."
The Sadrist Movement was the largest Shia block in the Iraqi parliament, Moqtada al-Sadr, its leader announced that he and all his parliament members resign from the government, launched a series of protests in Baghdad and other provinces of Iraq against corruption, and demanded holding early elections.
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