ARUNDEL — The state’s Office of the Chief Medical Examiner has completed an autopsy on Matthew Coito, 63, who was found  dead in the kitchen of his 45 Campground Road home on Wednesday, but authorities aren’t saying how he died while the investigation continues.

His wife, Sue Kim Coito, 65, remains unaccounted for, despite searches by Maine State Police and the Maine Warden Service Wednesday night and most of Thursday.  The search was to continue today.

Maine Public Safety spokesman Steve McCausland said state police on Thursday released a recent photo of Sue Kim Coito, whose hair is now mostly gray. She is 5-feet, 2-inches tall, weighs about 130 pounds and is of Korean descent.  

McCausland said Sue Kim Coito has severe Alzheimer’s disease, and may have been missing from the house since the weekend — that is the last time relatives heard from the couple. Relatives became concerned and went to their Campground Road home on Wednesday and found Matthew Coito dead and no sign of Sue Kim Coito.

Neighbor Kandis Hayes on Wednesday said Mathew and Sue Kim Coito were quiet folks, and could be seen walking their dog, named Bay, daily. She said the neighborhood kids liked playing with the dog. 

“They’re a nice couple, said Hayes. “They kept to themselves.”

She estimated the couple had lived in the neighborhood for about a decade.

A team of game wardens and state troopers, along with five dogs, searched about a half-mile square in a wooded area near the house on Thursday. 

“The Eastern Trail is nearby and that may be a focal point,” said McCausland in a telephone interview Thursday. “She was known to walk there.”

 Maine State Police evidence technicians and detectives worked all day on Thursday inside the Coito home. 

Anyone who may have seen Sue Kim  Coito in the past five days is asked to call state police in Gray at 657-3030.

— Senior Staff Writer Tammy Wells can be contacted at 324-4444 (local call in Sanford) or 282-1535, ext. 327 or [email protected]