Video: A timeline of the Colorado shooting

A sign for movie The Dark Knight Rises is displayed Regal Cinemas at Crossgates Mall in Albany, N.Y., on Friday, July 20, 2012. A gunman in a gas mask barged into a crowded Denver-area theater during a midnight premiere of the Batman movie on Friday, July 20, 2012, hurled a gas canister and then opened fire, killing 12 people and injuring at least 50 others in one of the deadliest mass shootings in recent U.S. history. (AP Photo/Mike Groll)

A sign for movie The Dark Knight Rises is displayed Regal Cinemas at Crossgates Mall in Albany, N.Y., on Friday, July 20, 2012. A gunman in a gas mask barged into a crowded Denver-area theater during a midnight premiere of the Batman movie on Friday, July 20, 2012, hurled a gas canister and then opened fire, killing 12 people and injuring at least 50 others in one of the deadliest mass shootings in recent U.S. history. (AP Photo/Mike Groll)

Published Jul 23, 2012

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CNN's Tom Foreman takes you minute by minute into the Colorado movie theatre massacre.

At least 12 people have been reported dead and 38 injured from the shooting spree.

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