School attack survivor: 'Three boys died before my eyes'

Survivors of a Taliban attack on a school in Peshawar, Pakistan, have been giving more details about the scale and brutality of the attack that killed more than 130 children and nine staff.

Eighteen-year-old Aqif Azeem told the BBC's Shahzeb Jillani how students took refuge in classrooms and how he tried to save other pupils' lives.