SAPULPA, Okla. - An ex-Oklahoma Highway Patrol trooper charged with rape and sexual battery of three women during traffic stops is scheduled to be arraigned.

A hearing is scheduled Wednesday in Creek County District Court for 42-year-old Eric Roberts, who also faces bribery, embezzlement and other charges. He has pleaded not guilty.

A judge last month ordered Roberts to stand trial after waiving a preliminary hearing on charges of rape by instrumentation, forcible sodomy, sexual battery, asking for or receiving a bribe and embezzlement. Roberts was ordered to trial in June on separate but related charges that he assaulted or behaved inappropriately toward three women during traffic stops.

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The allegations came to light last year when one woman filed a federal lawsuit.

Roberts was suspended from the patrol in July 2014 and resigned in September.