Published May 18, 2013 FoxNews.com

A Philadelphia teenager with cerebral palsy is recovering after a brutal attack in which she was bitten across her back and shoulders.  However, from where the bites originated remains a mystery.

16-year-old Ariel Alexander’s condition has confined her to a wheelchair for most of her life, leaving her unable to communicate to authorities about who committed the savage act, MyFoxPhilly.com reported. 

Yet the human bite marks across her left shoulder and upper back are clearly visible. CLICK HERE read full story.