At least 7 civilians were killed in a bomb blast outside a Kabul mosque. It was the deadliest attack in the Afghan capital since U.S. forces left at the end of August.

There was no immediate claim of responsibility, but suspicion fell on Islamic State extremists who have stepped up attacks on the Taliban in recent weeks, particularly in an IS stronghold in eastern Afghanistan.

An apparent roadside bomb went off at the gate of the sprawling Eid Gah Mosque in Kabul at a time when a memorial service was being held for the mother of chief Taliban spokesman Zabihullah Mujahid. Five people were killed, said Qari Saeed Khosti, the spokesman of the Interior Ministry.