The NFL says it will increase security inside and outside its stadiums for Sunday's games, two days after the Paris terrorist attacks.
Spokesman Brian McCarthy said Saturday that there will be more security and law enforcement personnel at the venues and in parking lots, along with other added security measures.
A league statement says it has been told by the Department of Homeland Security and the FBI "that there are no known threats against NFL stadiums."
The league says it has been in contact with home teams to reinforce its standard procedures, which include the use of metal detectors and a requirement that all bags brought into stadiums be clear.
The league also says a moment of silence will be held before all games this weekend to honor the victims.