FRESNO, Calif.—A Fresno County prosecutor is facing identity theft and other charges involving his ex-girlfriend.California Attorney General Edmund Brown has filed felony charges against David Jones, accusing the Fresno County deputy district attorney of stalking, stealing the identity, and falsely impersonating his ex-girlfriend.

A spokesman for the attorney general’s office says the charges filed Wednesday come after a probe launched by state officials in October of 2007.

Investigators say the 45-year-old Jones harassed the woman — identified in court documents as Jane Doe — from July of 2006 through August of 2007.

During that time, state investigators say Jones allegedly made threatening phone calls, made unwanted advances and impersonated the woman on Internet singles sites where he solicited individuals to contact her for sex.

A call to the Fresno County District Attorney’s Office seeking comment was not immediately returned.