At least forty-eight were killed and 67 injured in a bomb explosion at a Shia education centre in Afghanistan’s capital, Kabul, officials said, BBC reported.
Police told BBC a suicide bomber walked into the centre while teaching was under way and detonated his bomb belt.
Many of those killed were teenagers who were getting extra tuition as they prepared for university entrance exams.
In the northern province of Baghlan, an attack killed at least nine policemen and 35 soldiers, officials say.
Taliban militants denied involvement in the Kabul attack, in a mostly Shia Muslim area.
The Shia community in Afghanistan has been repeatedly targeted by Sunni Muslim extremists of the Islamic State group, which views the Shia practice of Islam as heretical.