Wandsworth prison in south London in a 2010 photo. Neil Moore, a 28-year-old convicted fraudster, walked out of the prison earlier this month by showing guards a bail letter he'd forged. Andrew Winning /Reuters/Landov hide caption

itoggle caption Andrew Winning /Reuters/Landov

Nigeria's President Goodluck Jonathan, left, and opposition candidate Gen. Muhammadu Buhari, right, prepare to sign a renewal of their pledge to hold peaceful "free, fair, and credible" elections, at a hotel in the capital Abuja, Nigeria, on Thursday. Ben Curtis/AP hide caption

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A German police investigator carries a box after searching an apartment believed to belong to the crashed Germanwings flight 4U 9524 co-pilot Andreas Lubitz in Duesseldorf, on Thursday. Wolfgang Rattay/Reuters/Landov hide caption

itoggle caption Wolfgang Rattay/Reuters/Landov

A Palestinian Bedouin girl milks a sheep in her family's makeshift camp in the West Bank. Herders live close to their animals, their main source of income. Emily Harris/NPR hide caption

itoggle caption Emily Harris/NPR

A stone memorial, surrounded by flowers, has been placed near the site in the French Alps where a Germanwings passenger jet crashed on Tuesday (March 24, 2015). Investigators believe the jet's co-pilot brought it down deliberately. Jeff Pachoud /AFP/Getty Images hide caption

itoggle caption Jeff Pachoud /AFP/Getty Images