The crime has caused deep shock not only among Japan residents but also among people around the world. In an interview with Sputnik, Souhei Satake, representative of Japanese Association of Assistance to persons with disabilities, said that he was struck by the cruelty of the crime.
"There haven't been such cases before. It is indeed a tragedy," the official said.
According to Satake, the working staff in such facilities is being primarily chosen on the basis of the interviews and in accordance with several criteria which Uematsu doesn't seem to possess.
"We are talking about helping people, and much attention is being paid to communication skills. This is a social institution, and the most important thing is that employees are kind to others. The employees are expected to love the patients," Satake said.
Uematsu was arrested earlier in the day. The assailant had a bag with several blood-stained knives when he gave himself up.
Uematsu was reportedly hospitalized after submitting the letter but was released two weeks later. Previously, the attacker worked at the facility between 2012 and early 2016 before leaving on his own accord.