At least 15 people, including four children, were wounded when unknown miscreants lobbed a hand grenade at a madrassa in Peshawar's Tehkal Bala area.
At least seven people were injured in the attack and police arrested one of the attackers, SSP Operation Abbas Majeed Marwat reports The Express Tribune.
A mosque was the target of the grenade attack, added the police officer.
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The mosque and madrassa belong to Jamaatud Dawa and several people were wounded in the attack, SP Cantt Kashif Zulfiqar said.
After the attack, the guards and residents opened fire at a man who was trying to escape, leaving him injured.
He was shifted to the nearby hospital and taken into custody. We believe he is the attacker, he added.
Meanwhile, local residents said a religious lecture was ongoing inside the madrassa at the time of the attack.