Egyptian Coptic Christians greet and take pictures of Coptic Pope Tawadros II (C), head of the Coptic Orthodox church, as he arrives to celebrate a Coptic Orthodox Easter mass at Cairo's main cathedral in Cairo April 11, 2015 (Photo: Reuters)
Egyptian Coptic Christians attends the Easter Eve service at St. Sama'ans Church in the Mokattam district of Cairo, Egypt, Saturday, April 11, 2015 (Photo: AP)
In a photograph taken with a long exposure people walk with lit candles during the Orthodox Easter religious service at a church in Malu Spart, Romania, Sunday, April 12, 2015 (Photo: AP)
A man stands next to the Egyptian Obelisk that stands in the center of the Place de la Concorde, in Paris, Sunday, April 12, 2015 (Photo: AP)
A member walks along the first fairway in the early hours of the morning before the final round of the Masters golf tournament Sunday, April 12, 2015, in Augusta, Ga. (Photo: AP)
People make soap bubbles outside Berliner Dom in Berlin, April 12, 2015 (Photo: Reuters)
A stork flies over the village of Mokrin, 120 kilometers (75 miles) north of Belgrade, Serbia, Sunday, April 12, 2015 (Photo: AP)
An armoured personnel carrier (APC) is stationed near an army barracks outside Sanaa April 12, 2015 (Photo: Reuters)
Revellers react as they are splashed with foam and water during Songkran Festival celebrations in Bangkok April 12, 2015. The Songkran festival, also known as the water festival, marks the start of Thailand's traditional New Year and is believed to wash away bad luck (Photo: Reuters)
Tourists walk under the Septimius Severus arch, dating back to 203 AD, in the ancient Roman Forum in Rome, Sunday, April 12, 2015 (Photo: AP)