At least 16 people were killed and 24 others injured by a blast at a madrassa in Afghanistan's northern city of Aybak on Wednesday.
A doctor in Aybak, about 200 kilometres north of the capital Kabul, said the casualties were mostly youngsters, reports AFP.
"All of them are children and ordinary people," he told the news agency, asking not to be named.
On the other hand, a provincial official confirmed the blast, but could not provide casualty figures.
There have been dozens of blasts and attacks targeting civilians since the Taliban returned to power in August last year, most claimed by the local chapter of the Islamic State (IS) group.
Bd-pratidin English/Golam Rosul