Neighbors heard Soichiro Mori, 56, screaming for help at a house upper east of Tokyo on Sunday morning, according to a police spokesman.
“At the point when the neighbor went to the house, an injured individual was found in the cage,” the spokesman told AFP.
The 15-year-old Asian wild bear was owned by a 70-year-elderly man who kept the animal in a cage in his home.
According to public broadcaster NHK, Mori was the bear’s caretaker who had been hired by its owner.
Mori was rushed to hospital but was however pronounced dead later Sunday, the police spokesman said.
The owner, who has not been named, had an official permit to keep the bear, which is legal in Japan.