Satoshi Uematsu, a former employee at the facility, does not dispute his involvement in the grisly stabbing rampage that shocked
Japan where violent crime is rare.
Uematsu's behaviour in court, including apparently trying to put something in his mouth, disrupted proceedings in the first hearing in January, with the judge calling a recess and then resuming without him.
Uematsu has reportedly said he wanted to eradicate all disabled people in the horrifying attack that also left 26 people wounded.