LAFAYETTE, La. (AP) — The federal trial of a Lafayette private investigator accused of doling out cash and gifts to secure favorable DWI plea deals for his clients has been delayed to June 8.

The Advocate reports Robert Williamson was set for trial next month, but U.S. District Judge Elizabeth Foote agreed to push back the date because Williamson is scheduled for radiation treatment following a recent surgery related to cancer.

Federal prosecutors allege Williamson took cash fees from his clients and used some of that money to bribe employees of the 15th Judicial District Attorney's Office to secure DWI plea deals allowing for a speedy disposition and expunging the charges.

Five others who were charged in the bribery scandal have pleaded guilty and are cooperating in the case against Williamson.