This photo provided by the University of Colorado shows James Holmes. University spokeswoman Jacque Montgomery says 24-year-old Holmes, who police say is the suspect in a mass shooting at a Colorado movie theater, was studying neuroscience in a Ph.D. program at the University of Colorado-Denver graduate school. Holmes is suspected of shooting into a crowd at a movie theater killing at least 12 people and injuring dozens more, authorities said. (AP Photo/University of Colorado)
WASHINGTON - U.S. law enforcement officials say the suspect in Friday's deadly shooting in Colorado is James Holmes, a 24-year-old white American.
Officials believe Holmes killed a dozen people when he fired into a crowded movie theatre in a Denver suburb. He was wearing a gas mask and set off an unknown gas in the theatre.
The Defence Department says Holmes never served in the Army.
Holmes is in police custody, and the FBI says there is no indication the incident is tied to any terrorist groups.
The federal law enforcement officials spoke on condition of anonymity to discuss an ongoing investigation.
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Associated Press writer Pauline Jelinek contributed to this report.
