Dr. Ei-ichi Negishi was found wandering a rural road south of Rockford, Illinois early Tuesday morning.
Ogle County Sheriff's Deputies were dispatched to the 8200 block of North Route 251, Davis Junction, at 5 a.m. on Tuesday, following up on a report of an elderly man who was found walking in the area.
The Ogle County Sheriff's Office says an 80-year-old woman named Smire Negishi was found along with her vehicle in Orchard Hills Landfill. The release says the husband is hospitalized.
The couple was reported missing to the Indiana State Police on Monday night. After learning that, they found Smire's body. Foul play is not suspected.
Negishi and another Japanese scientist Akira Suzuki, along with American chemist Richard Heck, professor emeritus at the University of DE, shared the 2010 Nobel Prize in chemistry for their work on reactions to create complex organic compounds.
More details about the death investigation were not immediately available.
13 News will continue to follow this story and bring you updates as they become available.