A state forester discovered a boy's body about a mile-and-a-half from the home of a 9-year-old who disappeared Saturday, a state Bureau of Forestry manager said Tuesday.

Logan Mitcheltree (search) was last seen around 4:15 p.m. Saturday wearing a long-sleeved shirt, slippers and pants, but no jacket. His siblings told police he had been watching TV with them before they noticed him missing.

The body was found on a leaf-covered forest road, said state Bureau of Forestry manager Jeffrey S. Prowant.

"It's fairly certain that it is confirmed that is Logan," he told The Associated Press.

Extremely cold temperatures left officials hoping that Logan might have found shelter in a storm drain, shed or some other safe hiding place.

Beginning Saturday, searchers with dogs or in small, fixed-wing planes and helicopters combed a three square-mile area of the town, woods, and mountains in the area, which is about 65 miles north of Harrisburg.

Searchers coming and going from a fire hall being used as a command post were determined to find the boy, despite having spent long hours in temperatures so cold that some volunteers encountered breathing difficulties.

Logan's mother told officials that Logan is hyperactive and has a mental state of a 3-year-old, Police Chief Rexford Lowmiller said. An aunt told a reporter he has a limited ability to speak and communicates in part through sign language, but declined to discuss the boy's medical condition. Authorities on Sunday had described him as autistic.