Arnold Schwarzenegger Tweets Photo of On-Set Injury

BOOKS: Arnold Schwarzenegger
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Schwarzenegger has inked a deal to write a memoir, "Total Recall," which will be published in October 2012. Simon & Schuster is expected to sell the book to foreign publishers at the Frankfurt Book Fair.

The actor, who is currently shooting action-flick 'The Last Stand,' posted a photo of a large gash on his forehead Friday.

Arnold Schwarzenegger is having a rocky return to the movies. 

The actor, who left Hollywood to serve as California's governor, is coming back to the big-screen in Jee-woon Kim 's The Last Stand

STORY: Lionsgate's 'The Last Stand' Starts Production

And while Schwarzenegger is no stranger to action, the filming got a little too real Thursday. The actor tweeted a photo of a large, bloody gash on his forehead, saying, "Got a little banged up on set today. Thanks to the medical staff who got me back in action an hour later!"

But, he didn't seem distressed, Schwarzenegger was smiling in the photo. He plays a sheriff trying to stop a local drug lord from escaping across the border to Mexico in the film, which is set to open in 2013.