A huge explosion has ripped through a crowded mosque in the Afghan capital Kabul, killing 21 people, police say. Another 33 people were injured, Kabul police spokesman Khalid Zadran added.
Wednesday's blast occurred during evening prayers. The mosque's imam Amir Muhammad Kabuli is reported to be among the dead. It is unclear who was behind the attack, a week after Islamic State (IS) militants killed a pro-Taliban cleric in a suicide bomb blast, also in Kabul.
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