Pakistani Christian Maria Akbar, 15, checks herself in the mirror, after having her make up done by hairdresser Razia Rehmat, 39, in preparation for Christmas holiday, at a hair salon, in a slum that hosts Christian families, on the outskirts of Islamabad, Pakistan, Wednesday, December 24, 2014. (Photo by Muhammed Muheisen/AP Photo)

A man cleans the ground outside the St Johns Cathedral Church, on Christmas eve in Peshawar December 24, 2014. (Photo by Khuram Parvez/Reuters)

Men are silhouetted as they decorate a door at the St Johns Cathedral Church, on Christmas eve in Peshawar December 24, 2014. (Photo by Khuram Parvez/Reuters)

Christmas decorations are seen on a door at the St Johns Cathedral Church, on Christmas eve in Peshawar December 24, 2014. (Photo by Khuram Parvez/Reuters)

A woman carries her baby as she looks out of her house window in a Christian slum in Islamabad on Christmas eve December 24, 2014. (Photo by Zohra Bensemra/Reuters)

A woman works in her kitchen beside a Christmas tree in a Christian slum in Islamabad on Christmas eve December 24, 2014. (Photo by Zohra Bensemra/Reuters)

Girls talk to each other as they sit at their house beside a Christmas tree in a Christian slum in Islamabad on Christmas eve December 24, 2014. (Photo by Zohra Bensemra/Reuters)

A girl carries her nephew at her house in a Christian slum in Islamabad on Christmas eve December 24, 2014. (Photo by Zohra Bensemra/Reuters)

A Christmas tree is seen on a balcony on Christmas eve in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

A Christmas tree is seen ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

Muslims take a selfie near a Christmas tree ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

Muslims take a selfie near a Christmas tree ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

Men decorate a tree ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

Men decorate a tree ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

A girl stands at an entrance of her house ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

A teenager studies at her house ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

Children play near a Christmas tree ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

A Christian family is seen atop of their house ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

A Santa Claus figurine hangs from a tree ahead of Christmas in a Christian slum in Islamabad December 24, 2014. (Photo by Zohra Bensemra/Reuters)

Girls sit on a ladder with a Christmas tree on a wall of their house on Christmas eve at a Christian slum in Islamabad December 24, 2014. (Photo by Sara Farid/Reuters)

A man lights candle lamps as he offers prayer for the victims of Pakistan Taliban attack on Army Public School in Peshawar, at a nativity scene created to symbolize the birth of Jesus Christ, on Christmas eve, outside a Christian colony in Islamabad December 24, 2014. (Photo by Sara Farid/Reuters)

Pakistani Christians decorate a Christmas tree on a street in Islamabad, Pakistan, 24 December 2014. Christians in Pakistan form the country's largest minority, accounting for 1,6 per cent of the population. (Photo by T. Mughal/EPA)

A girl stands outside a house illuminated with lights on Christmas eve in a Christian slum in Islamabad December 24, 2014. (Photo by Faisal Mahmood/Reuters)