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A string of bomb explosions, including two suicide attacks, killed at least 80 people and wounded many others in Shia-dominated neighbourhoods of Baghdad late on Sunday, Iraqi police and medical sources said. 

The north eastern area of Al-Shaab was rocked by two explosions, at least one of which was caused by an attacker who detonated his suicide vest, a police colonel and an interior ministry official said. 

At least three of the people killed in those blasts were members of the security forces, police said.

A suicide attacker also blew up his car bomb on Adan square, in north western Baghdad, just before iftar, the meal that breaks the dawn-to-dusk fast during the holy Muslim month of Ramadan.

The square which was already targeted in February and has been frequently hit over the years.  

In Al Bunuk area, a car bomb also went off near a popular restaurant, the same sources said. 

Another explosives-laden vehicle blew up in the Iskan neighbourhood. 

There was no immediate claim of responsibility for the worst string of attacks on the Iraqi capital in two months,but most such attacks are carried out by extremist Islamic State group. 

There had been fears that IS would intensify attacks in Baghdad during Ramadan, but with the fasting month nearing its end, there had been no surge in bombings until Sunday.