Law enforcement officials in Philadelphia are now joining local authorities in the search for an escaped inmate. Authorities say 33-year-old Isaiah Tilghman escaped from the Blair County Prison on Sunday. Detectives spotted a vehicle in Philly that was similar to one he stole in Lakemont shortly after he escaped. Tilghman, who was from Philadelphia was in the Blair County lockup on drug charges. Anyone with information that can help lead to his arrest should call 911