We have official confirmation that the upcoming animated adaptation of Batman: The Killing Joke has been rated ‘R.’

Sam Register, president of Warner Bros. Animation, told Entertainment Weekly in a statement:

“The Killing Joke is revered by the fans, particularly for its blunt, often-shocking adult themes and situations. We felt it was our responsibility to present our core audience — the comics-loving community — with an animated film that authentically represented the tale they know all too well.”

Warner Bros. haven’t released any further details about Batman: The Killing Joke and why it warrants an R-rating, but it’s not all that surprising considering how brutally violent Alan Moore’s seminal graphic novel was.

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During the narrative, The Joker paralyses Barbara Gordon, kidnaps Commissioner Gordon and taunts him with images of Barbara’s bloody body in an attempt to drive him to insanity.

Zack Snyder’s “Ultimate Edition” extended cut of Batman v Superman: Dawn of Justice will also be R-rated, containing 30 additional minutes of action and violence that have earned such a rating.

Batman: The Killing Joke reunites Batman voice actor Kevin Conroy with Mark Hamill’s Joker. The movie will debut at San Diego Comic-Con this summer before being released on DVD and Blu-Ray later in the year. Watch an extended sneak peek from the movie below: