JUSTIN BIEBER STARTLES FANS WITH JAIL PICTURE

Justin Bieber gave his online fans a fright on Saturday (24Jul10) by posting a picture of himself wearing a prison jumpsuit with his hands behind his back.

The startling image of the 16 year old, uploaded to Twitter.com, saw the star being led away by a security guard and was captioned, "I told you I was a BAD MAN!!"

But the singer revealed the shot was taken while he filmed a guest appearance on hit crime show CSI: Crime Scene Investigation.

The Baby hitmaker was on set over the weekend (24-25Jul10) shooting his role as a troubled teen for an upcoming episode, and he went on to gush about his "amazing" experience.

He wrote, "Big day today... I'm acting!!! CSI baby!! I'm a bad man!... Amazing day... excited for you guys to get to watch it... Thanks to everyone at CSI for having me."

Bieber's debut will air on 23 September (10).