Two people have been killed and two others injured after a planted bomb exploded inside a popular mosque in Kabul's fortified Green Zone.
Tariq Arian, spokesman for Afghanistan's Interior Ministry, said the bomb targeted the Wazir Akber Khan Mosque at around 7:25pm local time (1500 GMT) on Tuesday when worshippers had gathered for evening prayers.
The mosque is located in a high-security diplomatic area near the offices of several international organisations and embassies.
Prayer leader of the mosque, Mullah Mohammad Ayaz Niazi, was one of two people killed in the attack, Arian said. He was wounded in the attack and died later at a hospital.
The latest attack in the Afghan capital came after seven civilians were killed in the north of the country in a roadside bomb blast authorities blamed on the Taliban.
No group immediately claimed the evening explosion in central Kabul, which occurred at one of the city's most famous places of worship.
The mosque is located at the main entrance to the Green Zone and is accessible from both inside and outside the tightly controlled area.