Authorities searching for a missing computer consultant recovered his body from a New Jersey swamp, 10 days after he was believed to have been kidnapped from a Kentucky motel by a man brandishing fake FBI credentials. Gregory J. Marcinski is accused of kidnapping Paul Jeffery Gale from a motel in Florence, Ky. Marcinski's housemate was arrested and told agents where to find the body, the FBI said in court papers. Marcinski, 23, a volunteer medical technician, is charged with kidnapping and impersonating an FBI agent and may face murder charges. He is being held in Monmouth County, N.J., awaiting extradition. Gale, 28, was working for TRW in Kentucky this month as a consultant in the merger of two pharmaceutical companies. Marcinski admitted picking up Gale but said he dropped him off unharmed, authorities said.