Masacre at The Dark Knight Rises Screening in Colorado Leaves 12 Dead

INSIDE EDITION is on the scene in Aurora, Colorado, where a gunman opened fire at a screening on The Dark Knight Rises, killing 12 people and injuring many more.

Terror at the movies. Theater-goers ran for their lives after a gunman opened fire at a showing of the new Batman film, The Dark Knight Rises.

At least 12 people were killed and 50 wounded in the bloodbath at a movie theater in Aurora, Colorado, outside Denver.

One young man was in tears after seeing a young girl who had been wounded.

Cellphone videos posted on YouTube captured the horrific scene as terrified moviegoers fled.

Cops say the gunman threw a teargas canister during a midnight showing of  the movie, then opened fire. A three-month-old baby was shot at point-blank range.

Authorities have a suspect in custody. This is what we know: His name is James Holmes. He's 24 years old. He was raised in San Diego.

His mother was reportedly quoted as saying, "You have the right person. I need to call the police. I need to fly out to Colorado."

Police say Holmes was found outside the theater, carrying a knife, rifle and a handgun, and wearing a bulletproof vest.

The horrific shooting happened only 20 miles from the scene of that other Colorado tragedy, the massacre at Columbine High School in 1999 where thirteen people were killed.

INSIDE EDITION is on the scene in Aurora, Colorado. Tune in today for the latest details.