Sewing Pin: The New Terrorist Threat
The world is at war with Terror. The fear of suicide bombers and being kidnapped to nuclear weapons, we know there are dangers our there lurking.
The Nanboku subway in Sapporo, Japan, recently experienced that fear when a man reported finding a 5cm sewing pin to officials early one morning.

Immediately the train was evacuated.
After an intense search found no additional sewing pins or threats, the trains were opened once more and things returned to normal.
No casualties were reported and no suspect was captured.