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Carrollton, Ga. • The gunman responsible for last week's deadly attack in a Louisiana movie theater was delivered by deputies to a hospital for a mental evaluation in 2008 after his family said he was a danger to himself and others.

But the judge who ordered him detained said Monday that she did not have him involuntarily committed, which may explain why he was able to legally purchase the gun he used to kill two people and wound nine others before killing himself.

While an Alabama sheriff said that he denied John Russell Houser's application for a concealed weapon permit in 2006, there appears to have been nothing in court filings that would raise concerns in the FBI background check system.

Contrary to legal filings by Houser's family, Carroll County Probate Judge Betty Cason said she did not order Houser to be involuntarily committed for mental health treatment at the West Central Regional Hospital in Columbus, Georgia, which is in Muscogee County where she lacks jurisdiction.

Doctors at the hospital would have had to petition that county's probate judge for such a commitment, so "it wouldn't have come through me," Cason told The Associated Press.

This might explain why Houser passed a federal background check in February 2014 allowing him to buy the .40-caliber handgun, despite years of erratic and menacing behavior and run-ins with neighbors, local politicians and law enforcement officials.

Houser's federal background check came back clean, according to a lawyer for the pawn shop where he bought the weapon at Money Miser Northside Pawn in Phenix City. "We know ATF reviewed our sale and said everything is right on our side," said the store's attorney, Eric B. Funderburk.

"There's a very large haystack of people who have these characteristics, but very few needles that will indeed carry out a rampage," said James Alan Fox, a criminologist at Northeastern University. "They're not red flags. They're yellow. The only time they turn red is after blood is spilled on them."

Cason said she did sign an order April 22, 2008, authorizing deputies to detain Houser and take him, against his will if necessary, to a treatment facility for a mental health evaluation.

That order would have allowed medical authorities to examine Houser for up to five days. Afterward, doctors would have had to either release Houser, persuade him to voluntarily commit himself for treatment or ask the Muscogee County Probate Court to force him to undergo treatment over a longer period.

Houser suffered from bipolar disorder, showed extremely erratic behavior and had made "ominous as well as disturbing statements" in Carroll County objecting to the pending marriage of his daughter, the family said as they asked for help keeping him away. His wife, Kellie Houser, told police that her husband was not taking his medication and was forgetting to eat, according to a police report.

Cason says the case still raises troubling questions about how society cares for the mentally ill.

On one hand, judges are reluctant to take away the civil rights of someone who needs help. She credited Georgia with moving away from a system that effectively warehoused people with mental illness, and now focuses on community care.