Earlier in the day, a source told a Sputnik correspondent that the blast had claimed the lives of 30 people and injured 40 others. Meanwhile, the Al Jazeera broadcaster reported, citing an Afghan security source, that the death toll stood at 20 and the number of those wounded exceeded 40.
Prominent religious scholar Amir Mohammad Kabuli is among the victims of the mosque blast, according to the Sputnik correspondent.
No terrorist group has claimed responsibility for the attack so far.
The Taliban* claim they have full control of Afghanistan but the Daesh** terror group continues carrying out attacks on civilians and police across the country.
Two weeks ago, two deadly blasts in Kabul took the lives of 10 people, injuring 40 others. Daesh claimed responsibility for both attacks, according to media reports.
*Organization is under UN sanctions over terrorist activities
**A terrorist group outlawed in Russia and many other countries.