Update: Keith Carlisle was found safe, police said at about 10 a.m. Friday.
-------------------- Get Breaking News Alerts With the NBC Washington App A 9-year-old boy who suffers from medical conditions is missing and was last seen in Frederick, Maryland, police said.
Keith Carlisle left a home in the 1000 block of Heather Ridge Drive at about 4 a.m. Friday, Frederick police said. He was seen heading north on Opposumtown Pike near Thomas Johnson Drive. Haskins Up and Down As Bengals Beat...
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