The FBI says sports fans should be reassured of their safety this weekend.
The agency and the Department of Homeland Security say they've investigated the Internet threat to NFL stadiums this weekend and
determined it's a hoax.
The agencies issued a statement saying the public should be reassured of the stadiums' security when attending games this weekend.
The FBI interviewed a 20-year-old man in Milwaukee about the Internet posting which said NFL stadiums would be attacked with radioactive bombs this weekend.
The FBI says no decision has been made on whether charges will be filed.
The Internet message said trucks would deliver radiological bombs to stadiums in New York, Miami, Atlanta, Seattle, Houston, Oakland and Cleveland and that al-Qaida leader Osama bin Laden would claim responsibility.