Shia Labeouf was unmasked on camera after a visitor to his bizarre live art show in Los Angeles pulled his now infamous paper bag from his head. The Transformers star has sparked fears for his health in recent weeks over a number of strange stunts, including walking the red carpet at the Berlin International Film Festival last weekend (08-09Feb14) with a brown paper bag covering his face. The bag, which was scrawled with the words 'I am not famous any more', reappeared this week (beg10Feb14) when LaBeouf installed himself in a live art show, inviting fans to visit him one-on-one while he sits motionless and unresponsive with his face covered. Many critics have suggested it might not be LaBeouf hiding under the bag, and one decided to find out by taking the brown paper sack from his head. The incident was filmed and posted on Screenjunkies.com, and the video shows the camera operator asking the actor to take the bag off his head, before uncovering his face and exclaiming, "Wow! It's you!... I thought you had hired a guy..." The actor doesn't react and just stares blankly until the man leaves. The footage also includes a chat with a woman outside the gallery, who claims she saw the actor crying during her one-on-one session.