Pakistani Christians attend an Easter Mass at a church in eastern Pakistan's Lahore on March 31, 2013. Christians around the world are marking Easter Day, a Christian holiday to celebrate the resurrection of Jesus Christ on the third day of his crucifixion at Calvary as described in the New Testment. (Xinhua/Sajjad)

Pakistani Christians attend an Easter Mass at a church in eastern Pakistan's Lahore on March 31, 2013. Christians around the world are marking Easter Day, a Christian holiday to celebrate the resurrection of Jesus Christ on the third day of his crucifixion at Calvary as described in the New Testment. (Xinhua/Sajjad)

A Pakistani Christian attends an Easter Mass at a church in eastern Pakistan's Lahore on March 31, 2013. Christians around the world are marking Easter Day, a Christian holiday to celebrate the resurrection of Jesus Christ on the third day of his crucifixion at Calvary as described in the New Testment. (Xinhua/Sajjad)

Iraqi Christians take part in an Easter mass in Church of Mar Behnam in Hamdaniya town, Iraq, on March 31, 2013. (Xinhua/Yaser Jawad)

Iraqi Christians take part in an Easter mass in Church of Mar Behnam in Hamdaniya town, Iraq, on March 31, 2013. (Xinhua/Yaser Jawad)

Pakistani Christians attend an Easter Mass at a church in northwest Pakistan's Peshawar on March 31, 2013. (Xinhua/Umar Qayyum)

Pakistani Christian children enjoy swing ride during Easter celebrations in northwest Pakistan's Peshawar on March 31, 2013. (Xinhua/Umar Qayyum)

Pakistani Christians attend an Easter Mass at a church in northwest Pakistan's Peshawar on March 31, 2013. (Xinhua/Umar Qayyum)

Pakistani Christians attend an Easter Mass at a church in northwest Pakistan's Peshawar on March 31, 2013. (Xinhua/Umar Qayyum)