Bebb has served in the post since 2006 and would have served until Sept.1, but he has elected to take his retirement from the office two months earlier.
Gov. Bill Haslam now has the responsibility to appoint someone to fill the position until Sept. 1
District Attorney-elect Steve Crump won the May Republican Primary and faces no formal Democratic opposition in the August general election, which makes him the presumptive successor to Bebb in September.
Crump would under the normal calendar of events be taking office on Sept. 1. His election makes him the most likely candate to be selected to enter the office on an accelerated timetable.
Crump spoke with the Banner Friday evening, but did not want to speculate on that possibility.
"I appreciate the incredibly gracious treatment I've gotten from Gen. Bebb as we have already been working on the transition to take place in September," Crump said.
"I could not have asked for better treatment in this process. He and his staff have been so open and helpful."
Crump also extended his best wishes to Bebb as he enters retirement.
“I do applaud not just his last years in this position, but also his more than 40 years of service to the state of Tennessee,” Crump said.