At least 20 people were killed and over 50 others injured when unidentified armed opened fire on students and staff in Bacha Khan University in Khyber Pakhtunkha’s Charsadda town on Wednesday morning.

The attack was carried out at 9:30 am when students and faculty members gathered at the university to commemorate the death anniversary of Bacha Khan, a former political leader the university is named after. Four attackers scaled university walls, entered it and opened intense fire and conducted blasts. Security personnel retaliated fire, killing four attackers.

The dead and injured were shifted to a local hospital. The students and staff were also evacuated by security personnel during rescue operation. Panic gripped the area soon after the attack. Police, soldiers and special forces launched a ground and air operation at the university.

Prime Minister Nawaz Sharif has strongly condemned the attack and vowed to eliminate terrorists from the countrty. He said that those who kill innocent students and civilians have no religion.

Bacha Khan University campus was founded in 2012 in Charsadda and named after Abdul Ghaffar Khan, a 1920s Pashtun independence political leader and also known as Bacha Khan, who died in 1988. Today, students were observing his 28th death anniversary. Officials said that 3,000 students are enrolled in the university.