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Jim Axelrod, CBS News

BOLIVAR, Mo. -- On Friday, a young man who told Missouripolice he intended to commit mass murder was convicted of planning an armedassault.

The case of 21-year-old Blaec Lammersis the story of how difficult it is for many parents to get adequate medicalcare for their mentally-ill children.

Lammers has been in custody for the last15 months in Bolivar, Mo., for plotting mass murder.

"I watched a scary movie one dayand that thought came back in my mind," he said. "I could do this."

Could do what?

"Hurt somebody," he said.

Was he actually thinking he could killsomebody?

"At times I did," he said.

His videotaped confession to police abouthis plan to open fire at a Walmart and possibly a movie theater was made afterhis own mother turned him in.

"I just walk in and startshooting, and just wait till the police got there," he said in theconfession.

"Police got here and do what?"an officer asked him.

"Just hand myself over," heanswered.

Tricia Lammers had discovered areceipt in her son's pants.

"I found a receipt that said'Shotgun, $865," she said.

It turns out that shotgun receipt wasactually for an assault weapon. She called police.

Lammer's father, Bill Lammers, wasasked whether she had done the right thing.

"Yeah, and I'll tell youwhy," he said. "Our son isstill alive today and no one else was hurt."

Blaec's parents first noticed changesin their son's mental state when he was 16. Seven times in the next four yearshe would be admitted to psychiatric hospitals following escalating threats ofviolence.

"It's a revolving door,"Bill Lammers said. "Get them, treat them, get them out, because there is aline waiting."

Each time he was released after fourdays -- the legal limit without a hard-to-obtain court order -- with new medicationsand a new diagnosis, ranging from a form of autism to bi-polar to a conditionlinked to schizophrenia.

Does Blaec Lammers consider himselfmentally ill?

"If I stay busy, I'm good,"he said. "But if I get bored, or I'm by myself, I get to thinking ofstuff."

And that stuff could be suicidal orhomicidal, he said.

But he was never involuntarilycommitted during his seven trips to mental hospitals, so nothing came up on hisbackground check and he was able to go into Walmart and buy two AR-15 stylerifles, similar to the gun used in the Aurora, Colo., movie theater shootingand in Newtown, Conn.

Was he capable of shooting up a movietheater?

"It was a 50/50," he said.

Lammers could get life in prison whenhe is sentenced in March.

The defense could have asked for himto be put in a mental-health facility.

But before the verdict, the judgeasked Lammers if he had any interest in that.He said no.

So his only option now is prison.



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