A man accused of killing 19 residents at a care home for mentally disabled people near Tokyo is expected to plead not guilty at a trial to begin in January, sources familiar with the matter said Friday.The defense team of Satoshi Uematsu, 29, plans to argue in the trial that he was mentally incompetent due to the effects of drugs such as marijuana, the sources said.Uematsu is accused of stabbing 19 people to death and injuring 24 others at the care home in Sagamihara, Kanagawa Prefecture, in the early hours of July 26, 2016, as well as hurting two employees of the facility by binding their …READ FULL ARTICLE