Pictures from inside the Fatemieh mosque show shattered windows and bodies lying on the ground and other worshippers trying to help.

The explosion’s cause is not yet clear but a suicide bombing is suspected.

One witness told AFP he heard three explosions – at the main door, where worshippers wash, and a third blast.

The mosque was full of people at the time of the blast and at least 15 ambulances were at the scene.

Taliban special forces have secured the site and have asked people to donate blood to help the victims, Reuters reports.

BBC Afghanistan correspondent Secunder Kermani says that IS-K, a local branch of the Islamic State Group, was expected to say it was behind the attack.

Last Friday, a suicide attack on a Shia mosque during Friday prayers in the northern city of Kunduz killed at least 50 people. IS-K said it carried out the attack, which was the deadliest since US forces left at the end of August. (BBC)