Charges will be filed if warranted , Phelps 's spokesman said . Police published photo it says was taken at University of South Carolina . Photo shows Phelps with a water pipe used for growing marijuana . Phelps resigned over weekend for ` ` regrettable behavior ''
Charges will be filed if warranted , sheriff 's spokesman says . Tabloid published photo it says was taken at University of South Carolina . Photo shows Phelps with a water pipe used for smoking pot . Phelps apologized over weekend for `` regrettable behavior ''