Kabul mosque blast during evening prayers kills 21, say police

No one has claimed responsibility for explosion and Afghan authorities have not publicly assigned blame

A blast that tore through a Kabul mosque during evening prayers on Wednesday killed 21 people, police said, as the United Nations expressed concern over a growing number of civilian casualties from explosions.

The police spokesperson Khalid Zadran said another 33 people had been injured in the blast, which witnesses said shattered the windows of buildings near the mosque in a northern Kabul neighbourhood.