Boy, 4, walks home from Pittsburgh school midday

Pittsburgh school officials are trying to figure out how a 4-year-old boy slipped away from his preschool in the middle of the school day and walked to his home about a mile away. The boy's mother, Markeya McCary, says her son told her he left because someone tried to lock him in a closet. School officials are investigating that claim and trying to figure out how the boy was able to slip away from school.
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