At least 104 people were killed when unidentified armed men opened fire on a private school in Peshawar on Tuesday, Express News reported.
The Army Public School is located on Warsak Road near Army Housing Colony and a medical school.
Prime Minister Nawaz says this is a national crisis. "I will monitor the operation personally from Peshawar," he says.
Security is put on high alert in Islamabad after the attack on school in Peshawar, while K-P government announces three days of mourning.
As Reuters reported, Taliban gunmen in Pakistan took hundreds of students and teachers hostage on Tuesday in a school in the northwestern city of Peshawar, military officials at the scene said.
Military officials said at least six armed men had entered the military-run Army Public School.
About 500 students and teachers were believed to be inside.