Batman clings to top of North American box office

Twelve people were killed and 58 wounded when a gunman sprayed bullets into a midnight premiere of the final installment of the Batman trilogy in Aurora, Colorado on July 20.

The film finished its debut weekend with the third-largest earnings ever, and this weekend raked in earnings well above its competitors, bringing in $64 million, according to Exhibitor Relations, which tracks ticket sales.

Second place, with $13.3 million, went to 3-D computer-animated adventure comedy "Ice Age 4: Continental Drift."

Coming in just behind was science-fiction comedy "The Watch," which opened with $13 million in box office receipts.

The film stars Ben Stiller, Vince Vaughn, Jonah Hill and Richard Ayoade as four suburban dads who form a neighborhood watch only to end up battling an alien invasion.

"Step Up: Revolution," about a crew of street dancers protesting urban development plans in Miami, opened in fourth ($11.8 million), followed by cheeky teddy bear comedy "Ted," ($7.3 million) and "The Amazing Spider-Man" ($6.8 million).

Pixar studio's 3-D animated fairytale "Brave" dropped to 7th place ($4.2 million), ahead of Steven Soderbergh's comedy about male strippers, "Magic Mike," ($2.6 million) and Oliver Stone's new thriller "Savages," ($1.7 million), about Californian drug traffickers facing off against a Mexican cartel.

Rounding out the top 10 was Wes Anderson's dream-like narrative "Moonrise Kingdom," with $1.3 million.