10 year old boy missing and the FBI gets involved

Volunteers joined Buckeye police in searching unsuccessfully for a 10-year-old boy missing since he left his suburban Phoenix home last weekend.
Police suspended the search for Jesse Wilson late Wednesday morning because of the heat but say they plan to resume the search on Thursday. They're calling on experienced hikers to scour rugged terrain.
The FBI is now involved in the case, and agents were seen at the home of the boy's family removing bags of evidence Thursday morning.
Police say the boy slipped out his bedroom window Sunday night. He reportedly has left home before, but hasn't stayed out for an extended period. Investigators are still looking into the circumstances of the disappearance, but foul play hasn't been ruled out.
After his mother reported him missing, police searched for the boy on ground and from the air.
They say the boy is 4 feet tall, weighs 60 pounds and he was last seen wearing a red shirt, shorts, black socks and black shoes.
Police also say he has no known medical conditions.