Update: Keith Carlisle was found safe, police said at about 10 a.m. Friday.
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.
A K-9 searched the area of Carriage Way. Residents are asked to check their cars, yards and sheds for the boy.
He is Hispanic, has black hair and stands about 4-foot-10. He was wearing an orange, multicolored shirt and dinosaur pajama pants.
Stay with News4 for more details on this developing story.