'Batman v Superman' trailer leaked online

The highly anticipated trailer for "Batman v Superman: Dawn of Justice" briefly leaked online on Thursday.

Shot on a handheld camera or phone, the unauthorized video featured Portuguese subtitles - a sign it may have been from Brazil - and was quickly removed from YouTube.

Warner Bros. was supposed to premiere the "Batman v Superman" footage in select Imax theaters on Monday.

The studio could not be reached for comment.

Last year, Disney and Marvel were forced to release the trailer for "The Avengers," which leaked online prior to its exclusive debut on television.

Featuring voiceovers from Holly Hunter and Jesse Eisenberg (Lex Luthor), among others, the footage centers mostly on Superman's questionable place in the universe after "Man of Steel."

The citizens of Metropolis, amid chants and police altercations, appear to turn against Henry Cavill's character as a Superman statue has been spray painted "False God."

"Devils don't come from hell beneath us," Luthor says. "They come from the sky."

Before Ben Affleck is finally shown unmasked as Bruce Wayne, his butler Alfred (Jeremy Irons) says off camera: "That's how it starts, the feeling, the powerlessness, that turns good men...cruel."

We then catch several brief glimpses of Batman in full costume, mostly in the dark, as the batmobile later unleashes mayhem on the city before Batman and Superman meet face to face in the same footage screened at Comic-Con last year.

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