Gun and vehicle bomb attacks have killed at least 50 people in southern Iraq, officials said Thursday.
Sources at city hospitals said four Iranian citizens were among those killed. No group immediately claimed responsibility, but the attack occurred with Iraqi forces battling to defeat Islamic State militants in areas under their control.
Attackers wearing security force uniforms and driving stolen army vehicles, used auto bombs and suicide vests to cause the explosions.
The death toll could rise, warned Abdel Hussein Al-Jabri, deputy director-general of health for province of Dhi Qar, which was state of wounded " in critical condition ".
Shia Muslim pilgrims including Iranians are thought to be among the dead.
Police colonel Ali Abdul Hussain said in a brief statement, "One attacker blew up his suicide vest inside the crowded restaurant while a group of other gunmen started to throw grenades and fire at diners".
An Iraqi man stands near blood-stained pond at the site of a bomb attack in Nasiriyah city, about 350 km south of Baghdad, Iraq, 14 September 2017.
According to the UN Assistance Mission for Iraq (UNAMI), a total of 125 Iraqi civilians lost their lives, and 188 others were injured as a result of terrorist attacks and other acts of violence across Iraq in the month of August.