Two attacks in southern Iraq have left at least 50 people dead and dozens more wounded.
Jassem al-Khalidi, a senior health official, told the TV channel that more than 87 people had sustained injuries in the attacks.
Wearing security force uniforms and driving stolen army vehicles, the attackers targeted a police checkpoint and two restaurants on a highway near the city of Nassiriya, using auto bombs and suicide vests, the sources said.
The governor of Iraq's southern Thi Qar province, where Nassiriya is located, said the death toll was 45.
Gas prices drop in Meadville area
This compares with the national average that has increased nearly 2 cents per gallon in the last week to $2.65. There have been spots where gas stations in the region have been unable to keep up with demand.
He warned that the death toll could rise as numerous wounded were in serious condition.
The toll makes it the deadliest Daesh attack in Iraq since pro-government forces drove the extremists out of second city Mosul in July.
Security sources said the attackers were disguised as members of the Hashed al-Shaabi, mainly Shia paramilitary units which have fought alongside the army and police against the Islamic State to the north of Baghdad. It leads to the holy cities of Najaf and Karbala and is often used by Iranian Shi'ite pilgrims.
The attack occurred as Iraqi forces battled to defeat ISIS terrorists in areas under their control. Nasiriyah is the capital of Dhi Qar Governorate, which has a large Shiite population. Isis claimed the twin slayings through its propaganda agency Amaq.
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