Fresno 's deputy police chief was among four people arrested on federal drug charges , authorities said . The arrests came after a two-year investigation by the U.S. Drug Enforcement Administration and local law enforcement officials in California that began with an undercover sting operation at a Sacramento restaurant.
Fresno 's deputy police chief was among four people arrested on federal drug charges , authorities said . Deputy Police Chief Keith Foster was arrested for conspiracy to distribute and/or possess with the intent to distribute oxycodone , heroin and marijuana , the FBI said . Foster , a 29-year-veteran of the Fresno Police Department , oversaw patrol operations for the department 's four police districts . He has been a deputy chief since January 2007 .