An undercover Los Angeles Police Department officer has testified that she was assaulted by Dr Kevin Brown, the son of former Premier Ewart Brown and a prominent South Los Angeles doctor facing charges of sexually assaulting dozens of female patients, including a 15-year-old, the Los Angeles Times has reported.The officer, outfitted with surveillance equipment, visited Dr Brown’s Crenshaw Boulevard office in June 2008 posing as a patient. In an audio recording played back in an LA court, Officer Stacey Young and Dr Brown can be heard talking about her chronic ankle injury, a condition the officer said she developed after years of playing tennis.She said that when Dr Brown finished examining her ankle, she thought the doctor “did a great job” and that the exam seemed “very normal.”As she prepared to leave, however, she said Dr Brown conducted another exam to check her ears and throat. That’s when the doctor suddenly lifted her shirt and bra, and held her left breast in her hand, she testified.“It was extremely quick,” she said, adding that she immediately pushed him off and he tried to apologise.After she left the office, the officer could be heard in the audio recording telling other officers by phone, and later in person, about the incident. Her testimony followed the testimony of other women who claim they had been assaulted or inappropriately touched by Dr Brown when they came to him for treatment.Prosecutors say Dr Brown, 40, assaulted almost a dozen female patients, including the undercover officer. Dr Brown allegedly molested the patients under the guise of unnecessary breast and pelvic exams over a two-year period, beginning in 2003. Dr Brown has pleaded not guilty to 33 felony sex charges and could face life in prison.