Peyton Manning's legal team hired private investigators to visit the source of a report that he and other athletes obtained performance enhancing drugs.

In December, Al Jazeera reported that an intern at an Indianapolis anti-aging clinic was secretly recorded suggesting that Manning's wife received deliveries of human growth hormone in 2011. 

Charles Sly recanted his statements, which were recorded without his knowledge.

Manning's lawyers launched the private probe shortly after Al Jazeera started contacting athletes who would be named in the documentary in December.

They hired investigators to identify, locate and interrogate Sly and sent a lawyer to examine Peyton's and Ashley's medical records at the Guyer Institute of Molecular Medicine in Indianapolis, according to Ari Fleischer, the former White House press secretary and crisis management consultant Manning hired.