Any person using someone else's name for any purpose is identity theft. There is a lot of information missing to tell you exactly what to do about this but I would bring it to the attention of the police.
"Nothing in this communication is meant to establish an attorney-client relationship. The information is provided for educational purposes only. No action will be taken on your behalf unless you have have hired me and entered into a written retainer agreement. I am only licensed in Tennessee and I suggest contacting an attorney in your specific city and state as soon as possible to avoid any statute of limitations deadlines, if applicable."