The NFL says it is conducting a comprehensive review of allegations that Broncos quarterback Peyton Manning had human growth hormone delivered to his house.
There's no timetable to complete the investigation, but it's not expected before Denver plays Carolina in the Super Bowl on Feb. 7.
League spokesman Brian McCarthy says the inquiry, which began weeks ago, involves reviews of records, interviews and coordination with other agencies.
Al Jazeera reported last month that an intern at an Indianapolis anti-aging clinic was secretly recorded suggesting that Manning's wife received deliveries of HGH, which is banned by the league. Manning, then with the Colts, was rehabbing from shoulder surgeries.
The intern, Charles Sly, has since recanted his story.
Manning angrily denied using performance-enhancing substances and called the report "complete garbage."
Jet avoids jail
Jets defensive lineman Sheldon Richardson avoided jail time after pleading guilty to reduced charges connected to a high-speed police chase in suburban St. Louis.
A St. Charles County judge sentenced the former University of Missouri star to two years of probation and community service after his July arrest for driving a 2014 Bentley Silver Spur at speeds up to 143 mph on an interstate highway near his offseason home. The five misdemeanor charges included one for resisting arrest, for which Richardson could have spent up to one year in jail.