Fresno 's deputy police chief was among four people arrested on federal drug charges , including conspiracy to distribute oxycodone and heroin , authorities said Thursday . Deputy Police Chief Keith Foster , 51 , was arrested for conspiracy to distribute and/or possess with the intent to distribute oxycodone , heroin and marijuana , the Federal Bureau of Investigations said in a statement . Foster and Fresno residents Rafael Guzman , Jennifer Donebedian and Randy Flowers were arrested as result of a yearlong joint investigation by the FBI and ATF that involved wiretaps and surveillance , the FBI said . Scroll down for video . Accused : Deputy Police Chief Keith Foster , 51 , was arrested for conspiracy to distribute and/or possess with the intent to distribute oxycodone , heroin and marijuana , the FBI said ( file ) 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 . Foster has been put on paid administrative leave while the Fresno police conduct an internal investigation into alleged criminal and policy violations , the Fresno Police Department said in a statement . 'This is a very sad day for the Fresno Police Department , the citizens of Fresno , the law enforcement profession , and for me personally , ' Fresno Police Chief Jerry Dyer said . An affidavit by U.S. Bureau of Alcohol , Tobacco , Firearms and Explosives special agent Sherri L. Reynolds shows Foster told Flowers in a Dec. 23 , 2014 , phone call that he had '100 of those things ' for Flowers . Foster picked up a prescription for 100 oxycodone tablets at a Rite Aid pharmacy drive-thru and then drove his black BMW to Flowers ' home on West Church Avenue in a pocket of southwest Fresno just outside city limits . Foster picked up another prescription of oxycodone pills on Jan. 27 , 2015 , and then drove to Flowers ' home . Flowers has a criminal history in Fresno County that includes a 1988 conviction for possession of cocaine base for sale ; a 1994 conviction for being a felon and addict in possession of a firearm ; and a 2010 conviction for delivery of a schedule II controlled substance from Marion County , Oregon , the affidavit says . Neither the FBI nor the Fresno Police Department could provide the name of a defense attorney to comment on the charges . Years of service : 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 ( file )
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 51 .