<div class='quotetop'>QUOTE </div><div class='quotemain'>WASHINGTON (AP) - An Internet message claiming that seven NFL stadiums will be hit with dirty bombs this weekend was met with "strong skepticism" Wednesday by government security officials.With nothing to indicate an imminent attack, local authorities and stadium owners were alerted "out of an abundance of caution."Dated Oct. 12, the posting was part of an ongoing conversation titled "New Attack on America Be Afraid." It appeared on a Web site called "The Friend Society," which links to various online forums and off-color cartoons.The message said trucks would deliver radiological bombs to stadiums in New York, Miami, Atlanta, Seattle, Houston, Oakland and Cleveland ? and that Osama bin Laden would later claim responsibility.</div><div class='quotetop'>QUOTE </div><div class='quotemain'>"The death toll will approach 100,000 from the initial blasts and countless other fatalities will later occur as result from radioactive fallout," according to a copy of the posting obtained by The Associated Press.It said al-Qaida would automatically be blamed for the nearly simultaneous attacks and predicted, "Later, through al-Jazeera, Osama bin Laden will issue a video message claiming responsibility for what he dubbed 'America's Hiroshima."'The posting noted that all but one of the stadiums ? Atlanta ? are open-air arenas, adding: "Due to the open air, the radiological fallout will destroy those not killed in the initial explosion." The retractable roof in Houston has been closed for all games so far this season.</div>