That's the ruling from a Kennebec County Superior Court judge Thursday.
According to a spokes person for the Maine Attorney General's Office prosecutors say Andrew Balcer stabbed both his parents to death.
At the time Balcer was nearly 18-years-old.
During a hearing last week the defense said Balcer claims to be transgender and killed his parents after a verbally abusive gender remark from his father.
No trial date has been confirmed.