"The indefinite curfew continues as we want to ensure safety of Iraqi citizens," said Bassam Ridha, adviser to Iraqi Prime Minister Nuri al-Maliki.
As part of the security measure, the Iraqi authorities also closed the Baghdad airport for the second consecutive day, while a drizzle further ensured that people stayed indoors.
Apart from Baghdad, two other provinces -- Diyala and Salaheddin -- are also under curfew to thwart any outbreak of violence after the verdict in Saddam's first trial.
Anticipating a surge in violence the Iraqi government had imposed an indefinite curfew.
Since Friday authorities had also cancelled all military leave and put the country's armed forces on alert.
"The prime minister will discuss with the concerned committee about the security measure later today and will take a decision on further steps," Ridha told AFP.
Saddam yesterday was sentenced to death for "wilful killing" - part of his indictment for crimes against humanity in ordering the deaths of 148 Shi'ite residents of Dujail, north of Baghdad, after a 1982 assassination attempt against him.
Saddam's half-brother and intelligence chief Barzan al-Tikriti was also sentenced to die, as was Awad Ahmed al-Bandar, who was chairman of the so-called Revolutionary Court that ordered the Shi'ites executed.
The former vice president Taha Yassin Ramadan received a life sentence, while three Baath party officials from Dujail received 15 years each and a fourth, more junior figure, was cleared.
Celebrations
Shi'ites yesterday took to the streets in delight while their Sunni neighbours protested, when Saddam Hussein's death sentence widened Iraq's bitter sectarian divide.
While the sprawling east Baghdad suburb of Sadr City erupted with joy at the news that the hated despot had been sentenced to hang, there was an angry reaction on Saddam's home turf in Sunni regions in the north and west.
"Give him to us, we will execute him ourselves," chanted the Sadr City mob.
Iraq's Prime Minister Nuri al-Malki, a Shi'ite and a long-term opponent of Saddam's former Sunni-dominated regime, reflected the mood in his own community when he declared: "The Iraqi martyrs now have the right to smile."
State television intercut repeated images of Saddam's humiliation with footage of wildy cheering crowds and a music video in which a singer dressed in judge's robes stands in a courtroom and celebrates the execution order.
In the northern cities of Iraq's Kurdish autonomous region, which had long resisted Saddam's rule and suffered greatly from attacks by his armed forces, people supported the verdict but asked for it not to be carried out quickly.
Sunni anger
However the mood in Sunni towns was darker, and talk of conspiracy was rife.
"With our souls and our blood we redeem you, Saddam. Death to traitors and spies. Damn Bush and his agents. Yes, yes to the resistance. No option but to get rid of the occupier," chanted a crowd in Hawija, west of Kirkuk.
Thousands of Sunnis defied a curfew to march in support of
Saddam in his hometown, the northern city of Tikrit, some of them firing wildly in the air as US helicopters circled overhead.
Many Sunnis accused foreign powers, in particular the US, of intervening in the verdict.
"The sentence was pre-prepared in Washington and Tel Aviv," spat Tikrit civil servant Qusay Addai, bitterly.