US | terrorism FBI Warns of NYC Subway Terror Plot Al-Qaeda casually discussed holiday plot, source says By Newser Editors and Wire Services Posted Nov 26, 2008 11:15 AM CST Copied New York City Police officers look out windows overlooking Zuccotti Park and Ground Zero during the seventh anniversary of the Sept. 11 attacks commemoration ceremony in New York. (AP Photo/Daniel Acker, Pool) Federal authorities are warning law enforcement personnel of a possible terror plot against the New York City subway system during the holiday season. An internal memo obtained by the AP says the FBI has received a "plausible but unsubstantiated" report that al-Qaeda terrorists may have discussed suicide bombing attacks against the subway in late September. A Department of Homeland Security spokesman said the warning was issued as a routine matter but added there may be an increased police presence in New York and other large metropolitan areas. "We have no specific details to confirm that this plot has developed beyond aspirational planning," says the report, "but we are issuing this warning out of concern that such an attack could possibly be conducted during the forthcoming holiday season." Read These Next UPS driver hits the Slip 'N Slide with some partying teens. Lorde's risque photo causes a fuss. After girl goes overboard on cruise, 'hero' dad to the rescue. Judge orders witnesses in Kohberger case to testify. Get breaking news in your inbox. What you need to know, as soon as we know it. Sign up Report an error