Suicide bomber kills at least 31 at Baghdad Shi'ite gathering: police

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The explosion went off inside a tent filled with people taking part in Shi'ite Ashura rituals, mourning the killing of Prophet Mohammad's grandson Hussein in the 7th century.

Some people were also there to mourn the death of a local resident, said authorities.

The tent was set up in a crowded market in the city's northern al-Shaab district.

(Reporting Kareem Raheed and Ahmed Rasheed; Writing by Mhaer Chmayteli; Editing by Andrew Heavens)