HONOLULU -- A mentally ill man who stabbed and burned his mother and aunt to death six years ago may have to forcibly medicated at the state hospital.

Hospital officials say Micah White made threats that frightened staff and other patients at the hospital.

Micah White's attorney, public defender Susan Arnett, said she doesn't think White would be violent, but court records indicate he may have been accumulating potential weapons while his paranoia and hostility were coming back.

Delusions of vampire threats were among the schizophrenic symptoms that led White to stab his mother and aunt and set them and the family house afire in April, 2004.

Mental health experts and the judge agreed he was not legally responsible for the two deaths. He was found not guilty by reason of insanity and he has been in the state mental hospital ever since.

In recent months doctors reported he'd been intermittently refusing to take anti-psychotic medications, and symptom of his illness have resurfaced.

Deputy Prosecutor Franklin Pacarro, Jr. supported a motion Tuesday that would give state hospital doctors authority to medicate White by force if necessary. “He was not taking the medication that the doctors wanted to prescribe to him,” Pacarro said, “and basically he is a danger to himself and others.”

In a report to the judge, hospital staff said White threatened another patient, saying “I'm gonna cut your head off."

They also said he has shown extremely angry and hostile demeanor and he feels he is being treated unfairly.

After one incident, the report said, staff found four shark rocks and broken glass hidden in his socks and in a bandana wrapped around his knee.

White's attorney pointed out that he hasn't become violent, but said he understands now he needs to take his medication, even if he doesn't like the side affects.

“He's at times in the past asked doctors to increase the medication because he recognizes when the symptoms are getting stronger,” Arnett said. “He's actually been an aid for his own treatment, at times.”

At Tuesday’s hearing White agreed to take his medication voluntarily, but the judge also gave the hospital the authority to forcibly administer the medicine if he refuses.