Nasiriyah, Iraq. The place where the blast occurred(Image Source: Google Maps). Photograph: (Others)
87 people were wounded in the attack near Nasiriyah.
The Islamic State group has claimed responsibility for twin attacks that killed at least fifty-two people and injured ninety-one in southern Iraq on Thursday.
In a statement released by its propaganda arm Amaq, IS said several suicide bombers had staged the assault on a restaurant and a security checkpoint.
The attackers struck at midday, opening fire on a restaurant before getting into a car and blowing themselves up at a nearby security checkpoint, officials said.
Security sources said the attackers were disguised as members of the Hashed al-Shaabi, a mainly Shiite paramilitary alliance which has fought alongside the army and police against the Islamic State jihadist group in northern Iraq.
The toll from the attacks was fifty-two dead and ninety-one wounded, said Abdel Hussein al-Jabri, deputy health chief for the mainly Shiite province of Dhiqar of which Nasiriyah is the capital.
Jabri told AFP that many of the wounded were in serious condition.
The area targeted is used by Shiite pilgrims and visitors from neighbouring Iran headed for the holy cities of Najaf and Karbala further north, although Dhiqar has previously been spared the worst of Iraq's violence.
The Islamic State group claimed responsibility for the attacks in a statement carried by its Amaq propaganda arm.
It said several suicide bombers had staged the assault on a restaurant and a security checkpoint, killing "dozens of Shiites".
The toll makes it the deadliest IS attack in Iraq since pro-government forces drove the jihadists out of second city Mosul in July.
The Sunni extremist group regularly stages attacks in Iraq, where it has also lost swathes of territory to US-backed pro-government forces.
Thursday's attacks come as Iraqi forces backed by tribal fighters close in one of the last IS bastions in the country: the Al-Qaim area on the border with war-ravaged Syria.