Justin Bieber injured after falling from stairs

London: A day before his concert in Los Angeles, teen pop star Justin Bieber tumbled down the stairs, injuring his neck.

The 19-year-old `Baby` hitmaker uploaded a picture of his bruised skin on Instagram.Com page, reported Contactmusic.

"So I decided I was gonna fall down the stairs. So I did! That`s exactly what I did," Bieber joked, posting a video online.

Writing about the Addidas photo shoot which was due for him to be shot, Bieber wrote, "Why I gotta fall and cut my neck before a photo shoot. Fun."