UPDATE: Letters containing an unknown substance and the words "Al Qaeda" on it were delivered late this morning to at least six hotels within minutes of MetLife Stadium, drawing a massive emergency response amid heightened security for this Sunday's Super Bowl, CLIFFVIEW PILOT has learned. "The Joint Terrorism Task Force and hazard materials units have responded to several locations that have received a suspicious letter and substance," New Jersey State Police Sgt. Brian Polite said at 1:30. "There are no reported injuries at this time, and the locations are being secured," said Polite, who is at the joint command post at the East Rutherford stadium. "This situation is being thoroughly investigated and more information will be provided when it becomes available." Law enforcement sources told CLIFFVIEW PILOT that the envelopes, containing "a white powder" and the document were delivered to: Courtyard by Marriott on Polito Avenue and Quality Inn directly across [...]