A photograph lies on the auditorium floor of the Army Public School, which was attacked by Pakistan Taliban gunmen, in Peshawar December 18, 2014. Pakistan on Wednesday began burying 132 students killed in a grisly attack on their school by Taliban militants that has heaped pressure on the government to do more to tackle an increasingly aggressive Taliban insurgency. REUTERS/Khuram Parvez (PAKISTAN - Tags: CRIME LAW CIVIL UNREST EDUCATION)

A policeman collects blood samples as evidence on the auditorium floor at the Army Public School, which was attacked by Pakistan Taliban gunmen, in Peshawar December 18, 2014. Pakistan on Wednesday began burying 132 students killed in a grisly attack on their school by Taliban militants that has heaped pressure on the government to do more to tackle an increasingly aggressive Taliban insurgency. REUTERS/Fayaz Aziz (PAKISTAN - Tags: CRIME LAW CIVIL UNREST EDUCATION TPX IMAGES OF THE DAY)

Shoes lie in blood on the auditorium floor at the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. At least 132 students and nine staff members were killed on Tuesday when Taliban gunmen broke into the school and opened fire, witnesses said, in the bloodiest massacre the country has seen for years. REUTERS/Fayaz Aziz (PAKISTAN - Tags: CRIME LAW CIVIL UNREST TPX IMAGES OF THE DAY)

An army soldier stands inside the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. Taliban gunmen in Pakistan took hundreds of students and teachers hostage on Tuesday in a school in the northwestern city of Peshawar, military officials said. REUTERS/Zohra Bensemra (PAKISTAN - Tags: CRIME LAW CIVIL UNREST MILITARY)

A local reporter walks past a damaged wall of the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. At least 132 students and nine staff members were killed on Tuesday when Taliban gunmen broke into the school and opened fire, witnesses said, in the bloodiest massacre the country has seen for years. REUTERS/Fayaz Aziz (PAKISTAN - Tags: CRIME LAW CIVIL UNREST TPX IMAGES OF THE DAY)

Burnt books lie on the floor at the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. Taliban gunmen in Pakistan took hundreds of students and teachers hostage on Tuesday in a school in the northwestern city of Peshawar, military officials said. REUTERS/Zohra Bensemra (PAKISTAN - Tags: CRIME LAW CIVIL UNREST)

An army soldier inspects the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. Taliban gunmen in Pakistan took hundreds of students and teachers hostage on Tuesday in a school in the northwestern city of Peshawar, military officials said. REUTERS/Zohra Bensemra (PAKISTAN - Tags: MILITARY CRIME LAW CIVIL UNREST)

A boy stands where people said Taliban gunmen burnt a car to block a road outside the Army Public School, which was attacked by Taliban gunmen, in Peshawar December 17, 2014. At least 132 students and nine staff members were killed on Tuesday when Taliban gunmen broke into the school and opened fire, witnesses said, in the bloodiest massacre the country has seen for years. REUTERS/Zohra Bensemra (PAKISTAN - Tags: POLITICS CIVIL UNREST EDUCATION MILITARY TPX IMAGES OF THE DAY)

An army soldier stands guard inside the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. Taliban gunmen in Pakistan took hundreds of students and teachers hostage on Tuesday in a school in the northwestern city of Peshawar, military officials said. REUTERS/Zohra Bensemra (PAKISTAN - Tags: CRIME LAW MILITARY CIVIL UNREST)

An army soldier stands in the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. Taliban gunmen in Pakistan took hundreds of students and teachers hostage on Tuesday in a school in the northwestern city of Peshawar, military officials said. REUTERS/Zohra Bensemra (PAKISTAN - Tags: CRIME LAW CIVIL UNREST TPX IMAGES OF THE DAY)

Rescue team members go through debris inside the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. Taliban gunmen in Pakistan took hundreds of students and teachers hostage on Tuesday in a school in the northwestern city of Peshawar, military officials said. REUTERS/Zohra Bensemra (PAKISTAN - Tags: CRIME LAW CIVIL UNREST)

An army soldier stands by blood on the floor at the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. Taliban gunmen in Pakistan took hundreds of students and teachers hostage on Tuesday in a school in the northwestern city of Peshawar, military officials said. REUTERS/Zohra Bensemra (PAKISTAN - Tags: CRIME LAW MILITARY CIVIL UNREST)

A local cameraman films in front of an army soldier at the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. At least 132 students and nine staff members were killed on Tuesday when Taliban gunmen broke into the school and opened fire, witnesses said, in the bloodiest massacre the country has seen for years. REUTERS/Fayaz Aziz (PAKISTAN - Tags: CRIME LAW CIVIL UNREST)

Army soldiers enter the Army Public School which was attacked by Taliban gunmen, in Peshawar December 17, 2014. At least 132 students and nine staff members were killed on Tuesday when Taliban gunmen broke into the school and opened fire, witnesses said, in the bloodiest massacre the country has seen for years. REUTERS/Zohra Bensemra (PAKISTAN - Tags: POLITICS CIVIL UNREST MILITARY EDUCATION TPX IMAGES OF THE DAY)

A soldier walks past blood on the auditorium floor at the Army Public School which was attacked by Taliban gunmen, in Peshawar December 17, 2014. A shocked Pakistan on Wednesday began burying 132 students killed in a grisly attack on their school by Taliban militants that has heaped pressure on the government to do more to tackle the insurgency. REUTERS/Zohra Bensemra (PAKISTAN - Tags: CIVIL UNREST EDUCATION CRIME LAW)

Rescue team members walk inside the Army Public School, which was attacked by Taliban gunmen, in Peshawar, December 17, 2014. At least 132 students and nine staff members were killed on Tuesday when Taliban gunmen broke into the school and opened fire, witnesses said, in the bloodiest massacre the country has seen for years. REUTERS/Zohra Bensemra (PAKISTAN - Tags: CRIME LAW CIVIL UNREST)