Shooting marks second misfortune tied to "The Dark Knight Rises"

(CBS News) Friday morning's deadly Aurora, Colo., movie-theater shooting isn't the first misfortune surrounding the final film in Christopher Nolan's Batman trilogy.

In November, a male extra on the New York set of "The Dark Knight Rises" died of natural causes. A Warner Bros. rep said  the unidentified background actor died from heart attack during rehearsals in the Wall Street area of New York. He had walked away from filming during a break and was discovered unconscious close by.

Today, nearly nine months later, a mass shooting took place at a midnight showing of the film. Police confirmed that 12 people have died and dozens more have been injured.

And with the latest tragedy, we're reminded of the 2008 death of "The Dark Knight" star Heath Ledger prior to the film's release. The actor, who portrayed The Joker in Christopher Nolan's second Batman installment, had just finished filming his critically acclaimed and award-winning performance. His death took place in the midst of the editing phase of the film.

A special effects expert also died during the filming of the second Batman movie.