July 23, 2004
Source: The New York Times
http://www.nytimes.com/2004/07/23/nyregion/23train.html
On July 23, 2004 The New York Times reported, "For 90 minutes on Thursday morning, passengers aboard an Amtrak train headed to New York and Boston were questioned and videotaped as the seven cars were searched after a note containing Muslim and anti-Semitic phrases was found in a bathroom. No arrests were made at Pennsylvania Station in Newark, where the train was stopped just before 8 a.m., but all 450 passengers were asked to give their names, addresses, Social Security numbers and other information."