Bloodbath at Pakistan's Bacha Khan University leaves 21 dead

A Pakistani policeman takes photos of stairs splattered with blood, where Taliban militants were killed, at Bacha Khan university following an attack in Charsadda, about 50 kilometres from Peshawar, on January 20, 2016. At least 21 people died in a Taliban assault on a university in Pakistan, where witnesses reported two large explosions as security forces moved in under dense fog to halt the bloodshed. AFP PHOTO / Aamir QURESHI / AFP / AAMIR QURESHI

A Pakistani policeman takes photos of stairs splattered with blood, where Taliban militants were killed, at Bacha Khan university following an attack in Charsadda, about 50 kilometres from Peshawar, on20 January, 2016. At least 21 people died in a Taliban assault on a university in Pakistan, where witnesses reported two large explosions as security forces moved in under dense fog to halt the bloodshed. AFP PHOTO

Pakistani students come out from the Bacha Khan university following an attack by militants in Charsadda, about 50 kilometres from Peshawar, on January 20, 2016. At least 21 people died in an armed assault on a university in Pakistan on January 20, where witnesses reported two large explosions as security forces moved in under dense fog to halt the bloodshed. AFP PHOTO / A MAJEED / AFP / A Majeed

The number of dead rose rapidly after armed men stormed the Bacha Khan university in Charsadda, about 50 kilometres (30 miles) from the city of Peshawar, in the latest attack to hit the militant-infested region. AFP PHOTO

Pakistani army soldiers take part in search operation at the Bacha Khan university following an attack by militants in Charsadda, about 50 kilometres from Peshawar, on January 20, 2016. At least 21 people died in an armed assault on a university in Pakistan on January 20, where witnesses reported two large explosions as security forces moved in under dense fog to halt the bloodshed. AFP PHOTO / A MAJEED / AFP / A Majeed

Police, soldiers and special forces swarmed the university from the ground and the air in a bid to shut down the assault, as television images showed female students running for their lives. AFP PHOTO

An army helicopter arrives at Bacha Khan university following an attack by militants in Charsadda, about 50 kilometres from Peshawar, on January 20, 2016. At least 21 people died in a Taliban assault on a university in Pakistan, where witnesses reported two large explosions as security forces moved in under dense fog to halt the bloodshed. AFP PHOTO / Aamir QURESHI / AFP / AAMIR QURESHI

An army helicopter arrives at Bacha Khan university following an attack by militants in Charsadda, about 50 kilometres from Peshawar. AFP PHOTO 

Pakistani rescuers shift an injured victim in an army ambulance from a hospital following an attack by militants in the Bacha Khan university in Charsadda, about 50 kilometres from Peshawar, on January 20, 2016. At least 21 people died in an armed assault on a university in Pakistan on January 20, where witnesses reported two large explosions as security forces moved in under dense fog to halt the bloodshed. AFP PHOTO / Hasham AHMED / AFP / HASHAM AHMED

Pakistani rescuers shift an injured victim in an army ambulance from a hospital. Military spokesman Major General Asim Bajwa said on Twitter that four attackers had been killed. AFP PHOTO

Students of Islami Jamiat Talaba (IJT) shout slogans against the militants' attack on Bacha Khan university, in Karachi on January 20, 2016. At least 21 people died in a Taliban assault on a university in Pakistan, where witnesses reported two large explosions as security forces moved in under dense fog to halt the bloodshed. AFP PHOTO / Asif HASSAN / AFP / ASIF HASSAN

Students of Islami Jamiat Talaba (IJT) shout slogans against the militants' attack on Bacha Khan university, in Karachi. AFP PHOTO 

Pakistani policemen stand beside blood on the floor at Bacha Khan university following an attack in Charsadda, about 50 kilometres from Peshawar, on January 20, 2016. At least 21 people died in a Taliban assault on a university in Pakistan, where witnesses reported two large explosions as security forces moved in under dense fog to halt the bloodshed. AFP PHOTO / Aamir QURESHI / AFP / AAMIR QURESHI

Students spoke of one hero teacher — named by media as Syed Hamid Hussain — fighting back against the intruders, shooting his weapon in a bid to protect his charges. AFP PHOTO