A Memphis police Lieutenant is under investigation by the FBI.
Lieutenant Dennis Toll was assigned to the Investigative Services - Economic Crimes bureau.
It is FBI policy to not release details of an investigation while it is ongoing.
Memphis police did tell Action News 5 the FBI investigation only involves Toll and not his bureau.
Right now Toll is on desk duty pending the outcome of this FBI investigation.
He has been with the MPD since 1988.