ROWLETT, Texas - Police are investigating the alleged rape of a teen with special needs in Rowlett.
The 15-year-old victim suffers from a form of autism called Asperger syndrome. She has trouble communicating so her family uses a GPS tracker to monitor her location.
Police said the girl left home for a walk Wednesday afternoon. Her mother became concerned when the GPS device, called Angel Sense, indicated she was in an unusual place.
The device has a microphone, so her mom turned on the volume and what she heard was awful - her daughter being sexually assaulted.
"I knew exactly what was happening," the mom told FOX 4. "That can only be one thing."
The mother said the attacker saw the device and asked the girl to take it off. The girl said only her mom can do that and that's when the suspect stopped the attack
The man dropped the girl off at Rowlett Road and Hikok in an alley near her home.
The girl described her attacker as a bi-racial man with a t-shirt, Nike sandals, a mustache and a tattoo of a circle with points coming off of it. His drove a white car with two car seats and a booster seat in the back.
The girl and her family are now working with police on a sketch.
Anyone with information is asked to call the Rowlett Police Department.
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