Credit: CBS/ KCTV

A southwest Missouri man accused of plotting to shoot up a movie theater during the new "Twilight" film has been charged after his mother contacted police, telling them she worried her son had purchased weapons similar to those used during the fatal Colorado theater shooting.

Twenty-year-old Blaec Lammers, of Bolivar, is charged with first-degree assault, making a terroristic threat and armed criminal action. He was jailed in Polk County on $500,000 bond.

Bolivar Police Chief Steve Hamilton says Lammers is under a doctor's care for mental illness, and court documents say he was "off of his medication."

Police wrote in the probable cause statement that his mother contacted authorities Thursday, saying she worried that with this weekend's opening of the final film in the popular Vampire movie series, her son "may have intentions of shooting people at the movie."

She said she thought the weapons -- two assault rifles and hundreds of bullets -- resembled those used by a gunman who opened fire inside a theater in Aurora, Colo., during the latest Batman movie in July. That attack killed 12 people.

Lammers was questioned Thursday afternoon. Authorities say he told them he bought tickets to a Sunday "Twilight" screening in Bolivar and planned to shoot people inside the theater.

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