Islamic State militants in Afghanistan stormed Kabul University on Monday as it hosted a book fair attended by the Iranian ambassador, sparking an hours-long gun battle and leaving at least 22 dead and 22 wounded at the war-torn country's largest school.
Most of the casualties were students and there were fears the death toll could climb further with some of the wounded said to be in critical condition.
It was the second attack on an educational institution in Kabul in as many weeks.