SAN ANTONIO - After more than 130 cases assigned to the Special Victims Unit of the San Antonio Police Department were not "properly investigated," City Manager Sheryl Sculley announced Detective Kenneth Valdez has been terminated.

"There simply is no excuse for such improper behavior, and Detective Valdez is not representative of the thousands of men and women in our police department who are passionately committed to protecting the most vulnerable among us. I have directed the city attorney to do an independent review of the Special Victims Unit handling of cases," Sculley said in a statement.

The unit investigates accused sex offenders and family violence cases.

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Sculley previously said she was "appalled" and "outraged" when she learned of the problem.

"It's imperative that victims... have the utmost confidence that their case will be investigated immediately and thoroughly," Sculley said.

She noted that she and SAPD Chief William McManus have instituted a number of policy changes to the unit in the past decade "to improve the investigation of these particularly heinous crimes."