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The man suspected of carrying out the Colorado movie theater shooting, 24-year-old James Holmes from San Diego, wasa former graduate student in the neuroscience program at the University of Colorado Medical School, a university spokesman told NBC News. He dropped out a month ago.

The university website listed one of his courses as the Biological Basis of Psychiatric and Neurological Disorders. He was scheduled to make a presentation to the class in the spring on MicroRNA biomarkers.

Officials said they believe Holmes, born Dec. 13, 1987,  is the man who killed at least 12 people at a midnight showing of the new Batman movie in Aurora, a suburb of Denver.

More from Pete Williams and NBC News staff

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