Ihe battle for control of southern Iraq is continuing for a fifth day.
In one of the latest offensives, eight people died, including two women and a child, in an air raid.
Meanwhile a witness in Baghdad has told Al Jazeera he saw up to 40 Iraqi army and police surrendering their weapons to supporters of the Mahdi Army.
Its leader, Muqtada Al-Sadr, is calling on Arab nations to support his fight against US forces in Iraq.
James Bays reports from Baghdad.
Sadr urges support for ‘resistance’
03/29/08 “Al Jazeera“Muqtada al-Sadr, the Shia leader, has called on Arab countries to support his militia’s battle against “US occupation” as clashes between Shia groups and Iraqi government troops entered their fifth day.
The remarks came as Nuri al-Maliki, the Iraqi prime minister called the fighting in the southern city of Basra “a decisive and final battle”.
More than 200 people have reportedly died since an Iraqi military crackdown in Basra sparked violence across the country.
Al-Maliki, who is personally supervising the operation in Basra, told tribal leaders in the city that Iraqi forces would not leave “without restoring security and order”.
“We will continue to stand up to these gangs in every inch of Iraq,” he said in remarks broadcast on state-owned television on Saturday.
“This is a decisive and final battle.”
The Basra crackdown was aimed at disarming the city’s warring Shia militias, including the Mahdi Army of al-Sadr, as well as crushing a number of criminal gangs.
In an exclusive interview with Al Jazeera in Damascus, al-Sadr called on the Arab League, the Organisation of the Islamic Conference and the United Nations to recognise “the Iraqi resistance”.
“I appeal to these parties to add legitimacy to the resistance and to stand by, not against, the Iraqi people because the Iraqi people need Arabs as much as they need any other person,” he said.
“Iraq is still under occupation and the United States’ popularity is reducing every day and every minute in Iraq.
“I call, through Al Jazeera, for the departure of the occupying troops from Iraq as soon as possible.”
Meanwhile, fighters loyal to the Shia leader rejected the prime minister’s call to disarm.
“Sadr has told us not to surrender our arms except to a state that can throw out the occupation,” Haider al-Jabari, a member of the Sadr movement’s political bureau, said.
On Thursday al-Maliki said that Basra residents would receive a “reward” if they handed in “heavy and medium-size weapons”.
However, in Baghdad an official from al-Sadr’s movement said Iraqi soldiers had attempted to hand their weapons over to him.
“We told them they should keep their arms. We gave them a Koran and they went back,” Salman al-Afraiji said.
A curfew is in place in the capital amid the violence, with restrictions set to be reviewed by the military command on Sunday.
James Bays, Al Jazeera’s correspondent in Baghdad, said on Saturday that missiles were still being fired.
“I heard six mortars or rockets – it’s difficult to distinguish between the sound of mortars and Katyusha rockets – land in the Green Zone,” he said.
Ahmed, a resident of slum neighbourhood which is home to about two million people, said the situation was deteriorating.
“The hospitals are overflowing with wounded. They can’t take any more. Even the medical stores are closed,” he told the AFP news agency.
“There is no electricity, no water or fuel. We are afraid of gunbattles. The main markets are also closed.”
Qassim Mohammed, a spokesman for Baghdad health directorate, told reporters in Sadr City: “Seventy-five people have been killed and 498 wounded in clashes in Sadr City in the last four days.”
He accused American forces of “creating obstacles” in transporting victims of the violence to safety.
In Basra, Iraqi police said that eight civilians were killed and seven wounded in an air raid by US aircraft on a house on Saturday.
The US military said it was looking into the report. Both US and British military aircraft have provided air support to Iraqi forces in southern Iraq.
Fighting has also been reported in the central city of Karbala.