Riders on the Washington metro system were warned Thursday to expect random checks of carry-on items two days after the government disclosed the arrest of an Afghan man for allegedly threatening to bomb the system.
The stepped-up security measures at the height of the Christmas shopping season also coincided with a warning by Interpol that it had received information about possible Al-Qaeda attacks in the United States and Europe.
Metro Transit Police “will conduct random inspections of carry-on items, as part of the continuously changing law enforcement programs designed to keep the system safe,” the Washington Metropolitan Area Transit Authority said in a statement.
Police will use bomb-sniffing dogs and sensors that rely on ionization technology to check the bags for hazardous materials, it said.
The inspections would take only minutes and were designed to be “non-intrusive,” it said.