London (CNN) — The call came into the London Metropolitan Police bomb squad in the early hours of the morning. Isolated at the East Midlands airport in central England was a UPS package dispatched from Yemen, containing a laser printer that Saudi intelligence believed had been converted into a bomb.
Before dawn a bomb squad arrived on the scene. The plane had been cleared and left at 4:20 am, without the package identified by its waybill number as the laser printer. Officers inspected the printer and lifted out the ink cartridge but found no explosive device. According to security sources, they also brought in specially trained dogs and passed the printer through an X-ray scanner, but those, too, failed to locate any explosives.