The best thing to do is to call your bank, almost every bank has a fraud division. Tell them you filed the police report (give them a copy if they want it) and that you never authorized that check. See what they say.
If that doesn't work then consult with a debt collection or civil litigation attorney, they would be the best bet for knowing more about that particular issue.
These answers are not intended nor shall it be deemed to be the rendering of legal advise, they are given based on the information provided which is insufficient to give meaningful advise. These answers shall not be construed as part of the creation of an attorney-client relationship, nor shall it impose an obligation on the part of the attorney to respond to further inquiry. The Questioner has responsibility of obtaining legal advise from an attorney and is urged to do so. If the Questioner wants to hire this Attorney for their case they must first contact his law office by emailing him at email@example.com to setup a consultation. After a full discussion of the facts Corby and Ingalls, Attorneys at Law, PLLC can decided whether or not to accept the case.