The Sterling Police Department is investigating multiple retail thefts which occurred at the Walmart Supercenter in Sterling, Illinois on November 13, 2015, December 8, 2015 and January 20, 2016.    The Sterling Police Department is seeking the public’s assistance in identifying two white male subjects in their mid-twenties. At the time of the third incident one subject was wearing a black Puma sweatshirt, and white baseball cap. The second subject was wearing a camo sweatshirt and baseball hat.    Anyone with information is requested to call the Sterling Police Department at 815-632-6640 or Whiteside County CRIMESTOPPERS at 815-625-7867.