Report: NFL's Manning HGH investigation to continue despite retirement

Peyton Manning won't play another game in the NFL, but that won't prevent his alleged past actions from coming under scrutiny by league investigators.

The league will continue its current investigation into whether Manning obtained and used human growth hormone in 2011, Mike Florio of Pro Football Talk reports.

Manning was accused in an Al Jazeera report of receiving shipments of HGH via his wife and using the drug to aid in recovery from multiple neck surgeries.

Other players were allegedly involved in receiving HGH, so that may help explain why the NFL's investigation will continue.

As Florio notes, Manning's retirement could make it much more difficult for the NFL to obtain evidence. He can decline to cooperate with no fear of suspension or fine under the league's PED policy - with the possible exception being if he's employed by a team in a front-office role.