A grenade blast near a school complex in the Afghan capital wounds at least 42 children, the UN says

Children between 9 and 14 years old were hurt in a blast. The United Nations reported that at least 42 youngsters were wounded.

An investigation is underway to determine what happened. Authorities have not released many details about the incident.

Further information can be found from the UN, which has called for a probe into the circumstances surrounding the explosion that harmed numerous children.