AceShowbiz - Josh Brolin is sporting a mystery injury - the actor has been photographed out and about wearing a neck brace. The "Milk" star, who is currently shooting scenes for action movie "True Grit" alongside Matt Damon, was attending a press event for upcoming film "Jonah Hex" on Saturday, June 12 in Los Angeles when he was seen with the neck support.

Brolin stepped out of the Four Seasons Hotel in Beverly Hills sporting the brace after completing his promotional duties. It is unknown how the actor injured his neck.

In "Jonah Hex", Josh Brolin plays a scarred drifter and bounty hunter of last resort, a tough and stoic gunslinger who has survived death. In exchange for his freedom, Jonah Hex is ordered by the U.S. military to stop a terrorist who is ready to unleash Hell on Earth. He is hired to track down Quentin Turnbull, with whom he shares a troubled past.

Megan Fox is tapped to portray a prostitute named Leila who will join Hex in the adventure. John Malkovich and Michael Fassbender also join the cast as villainous characters, Turnbull and Burke. This thriller is directed by Jimmy Hayward.