A man in his 20s was taken in for voluntary questioning by police on Saturday, after the skeletal remains of his former girlfriend were found in his home near Tokyo, investigative sources said.The man, who had been warned by the police for stalking 20-year-old Asahi Okazaki before she went missing in December, returned to Japan from overseas Saturday afternoon, they said.During a search of the man's house in Kawasaki, Kanagawa Prefecture, on Wednesday, the police discovered a bag containing human remains under the floorboards. They conducted the search on suspicion that the man violated the…READ FULL ARTICLE