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Pope Francis leads the Easter mass in St. Peter's Square at the Vatican, Sunday, March 31, 2013. Pope Francis is celebrating his first Easter Sunday Mass as pontiff in St. Peter's Square, which is packed by joyous pilgrims, tourists and Romans.
On Easter Sunday, the most holy day of the Christian calendar, believers attended religious services - whether among the packed crowds before a new pope in St. Peter's Square, at sunrise services in India and Pakistan, or at churches flanked by blast walls and security cordons in Iraq.

Here are some scenes from Easter Sunday around the world.

Pope Francis celebrates the Easter mass in St. Peter’s Square at the the Vatican Sunday, March 31, 2013. "Our daily problems and worries can
Pope Francis celebrates the Easter mass in St. Peter's Square at the the Vatican Sunday, March 31, 2013. "Our daily problems and worries can wrap us up in ourselves, in sadness and bitterness, and that is where death is," he said. "Let the risen Jesus enter your life, welcome him as a friend, with trust: he is life!" said Pope Francis during the Easter vigil. ((AP Photo/Andrew Medichini))


Swiss guards stand in St. Peter’s square at the Vatican on the occasion of the celebration of the Easter mass Sunday, March 31, 2013. "Our daily
Swiss guards stand in St. Peter's square at the Vatican on the occasion of the celebration of the Easter mass Sunday, March 31, 2013. "Our daily problems and worries can wrap us up in ourselves, in sadness and bitterness, and that is where death is," he said. "Let the risen Jesus enter your life, welcome him as a friend, with trust: he is life!" said Pope Francis during the Easter vigil. ((AP Photo/Andrew Medichini))