At least 12 people were killed in an explosion inside a mosque in the Afghan capital Kabul during Friday prayers as worshippers gathered for the second day of the Eid al-Fitr holiday, officials said.
Ferdous Faramarz, spokesman for the Kabul police, said the mosque's Imam was among the 12 dead and at least 15 other people were wounded. He did not identify the mosque where the blast took place.
There was no immediate claim of responsibility for the attack. Taliban insurgents have called a three-day ceasefire for the holiday, which marks the end of the Ramadan holy fasting month.
The blast came less than a week after an explosion at a school killed 80 people. The Taliban denounced that attack and no one has claimed responsibility for it.
US officials believe it may have been the work of a rival militant group such as the IS.
Violence, including attacks on civilians, have increased in Afghanistan, even as the United States has begun an operation to withdraw all its remaining troops over the next four months.