The FBI is looking for your help in a case it says has hit a dead end.

John Doe 38 in a person of interest in a child sexual abuse investigation.

An agent with the Federal Bureau of Investigation said in a phone interview Thursday that the incident allegedly happened back in July 2014 in Louisville, Kentucky.

The agent said the alleged victim did not know the suspect.

Authorities want to identify John Doe 38 and speak with him because they say he may know the identity of the child victim.

John Doe 38 is described as a white male, likely between the 40 and 60-years-old.

He has grayish-brown hair and is balding at the crown of his head. 

The agent said John Doe 38 could be in Indiana, Michigan, Wisconsin, Illinois, Ohio, Kentucky, or Tennessee. 

Anyone with information should submit a tip online at https://tips.fbi.gov/ or call the FBI’s toll-free tip line at 1.800.CALL.FBI (1.800.225.5324).

For more information please visit http://www.fbi.gov/wanted/ecap.