The Salt River Police Department has placed Chief Patrick Melvin on administrative leave.
A statement from a spokesperson with the Salt River Pima-Maricopa Indian Community says it's their policy not to comment on personnel matters, and that no further information would be released from their office.
Less than a week ago Melvin, who is also the former City of Maricopa police chief, was still on a list of the top candidates remaining to be named the new Phoenix police chief.
No information has been released on the circumstances of Melvin being placed on leave.
Stay with ABC15 and ABC15.com for more on this developing story.