Authorities in Dubai intercepted an explosive device shipped from Yemen and bound for a Chicago-area Jewish institution aboard a cargo jet, officials disclosed Friday.
A second package—also from Yemen—was discovered aboard a plane in England. It, too, was addressed to a Jewish organization in the Chicago area, although there was no immediate confirmation about its contents.
Several other cargo planes at airports along the Eastern Seaboard of the United States also were searched, and officials said no explosives were found. An Emirates Airlines passenger jet carrying cargo from Yemen was escorted from the Canadian border to New York City by two military fighter jets as a precautionary action, U.S. officials said.
In a statement Friday afternoon President Barack Obama described the day’s findings as a “credible terrorist threat” against the United States. He added that the events “underscore the necessity of remaining vigilant against terrorism.”
White House counterterrorism adviser John Brennan later told reporters that the explosives “were in a form that was designed to try to carry out some type of attack,” but he provided no further details.
“The forensic analysis is under way,” he said, adding, “Clearly from the initial observation, the initial analysis that was done, the materials that were found in the device that was uncovered was intended to do harm.”
Ross Rice, an FBI spokesman in Chicago, said both suspicious packages had been sent from the same address in Yemen.
U.S. officials said they were increasingly confident that the packages were part of a plot by Yemen’s al-Qaeda branch, the same group responsible for an attempted bombing of a U.S.-bound airliner last Christmas. They spoke on condition of anonymity, citing the ongoing investigation.
Other officials, also speaking on condition of anonymity, said the package found in England contained a printer toner cartridge with wires and powder. It was discovered aboard a plane in East Midlands, north of London.
One official said intelligence personnel had been monitoring a suspected plot for days. The packages in England and Dubai were discovered late Thursday after a foreign intelligence service picked up information related to Yemen and passed it on to the United States, this official said.
The Associated Press contributed to this report.