The Oakland, California, police department has fired four officers and suspended seven in a major sexual misconduct case, but critics have questioned why officers haven't faced criminal charges and why an exploitation victim at the center of the case remains behind bars. The disciplinary actions ... stem from a case involving a teenage girl who was sexually exploited by more than a dozen officers across the northern California region. In 2015, officer Brendan O'Brien reportedly killed himself and left a note that launched an investigation into widespread misconduct allegations. The Oakland newspaper East Bay Express uncovered that three officers had allegedly had sexual relations with a teenage girl when she was underage. The girl ... said she was a sex worker at the time. By law, however, those relationships would be considered statutory rape and human trafficking. A total of at least 14 officers in Oakland as well as eight from other nearby law enforcement agencies are accused of taking advantage of the teenager. Months later, there are still no criminal charges. On the contrary, the woman recently went to a rehab center in Florida where she was arrested. She remains incarcerated at a local jail. Critics of the police department ... said they were particularly disturbed that the exploited woman was behind bars while the officers who have allegedly engaged in misconduct have remained free - many of them still employed by the city.