"Twenty-six people were killed in the center of Baghdad as a result of a double terrorist attack," the TV channel reported on Twitter, which added that the attack was carried out by a suicide bomber.
The circumstances of the incident are still being investigated.
According to Iraqi interior ministry, the death toll could rise as more bodies were being recovered from the site.
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In late November, two suicide bombers launched an attack in a Baghdad district that claimed the lives of 17 people and left 28 wounded.