Frazier Glenn Cross arrived at the Johnson County Courthouse in a wheelchair for a brief hearing.
His attorney told the judge he needed more time to prepare.
Cross is charged with capital murder and first degree premeditated murder.
The self-proclaimed white supremacist is accused of killing 69-year-old William Lewis Corporon and his 14-year-old grandson, Reat Underwood, as well as 53-year-old Terri Lamano at a nearby Jewish retirement complex earlier this month.
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