Tariq Arian, spokesman for the Afghan Interior Ministry, said the bomb targeted the Wazir Akber Khan Mosque at around 7:25 pm, when worshipers had gathered for evening prayers.
No one immediately claimed responsibility for the attack, but both the Taliban and the Islamic State group are active in eastern Afghanistan, especially Nangarhar province
The provincial governor's spokesman Gul Islam Seyal put the death toll at 12 but said authorities were on the scene sifting through the debris
Casualties are feared in what is the latest violence to hit the war-torn country
Interior ministry spokesman Nasrat Rahimi provided the toll, which is the highest in Kabul in recent months
The car bomb exploded near the entrance of a police station in western Kabul around 9:00 am (local time)
Provincial health department spokesman Inamullah Miakhil confirmed its midwife centre had been attacked