A tax return requires a signature which means he committed the crime of forgery. You are entitled to get a copy of the return filed which, if paper, has the forged signature on it. If he filed electronically he signed your name on an authorization form. Yes you should report it to the police and possibly the Treasury Department or the FBI. (It's a federal crime as well)
You should report the fraud to the I.R.S., FTC, and local authorities. I would suggest paper filing your return and submitting any fraud/identity theft reports that you've filed, as this may allow your return to be processed. It may take awhile for the I.R.S. to process your identity theft report, as they are backlogged with these types of issues, but it should eventually be straightened out.
You apparently posted this question twice. See the answers to the other posting also.
These comments do not constitute legal advice. They are general comments on the circumstances presented, and may not be applicable to your situation. For legal advice on which you may rely consult your own lawyer.