U.S.

Associated Press
FILE - This undated file photo provided by the Tucson Police Department shows Isabel Mercedes Celis, 6, whose parents say was missing from her bedroom when they awoke on Saturday, April 21, 2012. The girl's family was allowed to return to their Tucson home on Tuesday, April 24, a day after authorities kept them away as they searched for clues to her disappearance. (AP Photo/Tucson Police Department)

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