The Lexington and Jessamine County Fire Departments were part of the search near the Clay’s Ferry and I-75 bridge.
We’re told Lexington police asked the departments for help.
Investigators did not say exactly who or what they were looking for.
But there is speculation that they may have been looking for a missing Lexington man.
32-year-old Alex Johnson was last seen December 20th.
Two boats equipped with sonar searched the river waters Tuesday, but fire crews say they didn’t find anything.