(SFGATE) — A nurse at Washington Hospital in Fremont is facing criminal charges and a federal civil rights lawsuit for allegedly sexually assaulting two women in the emergency room three years apart.

Jon Jeffrey Quianzon, 31, of Union City molested a patient in October 2009 after he gave her pain medication that caused her to pass out, according to a lawsuit filed Wednesday in U.S. District Court in San Francisco. The woman reported the incident to the hospital, but officials there did not contact police and kept Quianzon on staff, the suit said.

In June 2012, a 22-year-old woman suffering from alcohol poisoning was taken to the emergency room, where Quianzon allegedly tried to sodomize her, authorities said. A doctor interrupted the attack, and Quianzon was arrested, investigators said.

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