Not sure what you would file such charges for. However, you need to see a local family law attorney now. You should also see the local child support office and , potentially file a claim with the local police for his abandonmoent of the chidern.
I changed, hopefully, the reference/practice area to Family as I think you will get a better response there.
The above is not intended as legal advice. The response does not constitute the creation of an attorney client relationship as this forum does not provide for a confidential communication.