On September 23, 1988, a bomb exploded on Pan Am Flight 103 over Lockerbie, Scotland, killing all 259 people aboard and 11 people on the ground. The attack, attributed to Libyan operatives, remains one of the deadliest terrorist acts in history. The bomb was hidden in a suitcase and detonated mid-flight, causing the plane to crash into the town of Lockerbie. The tragedy led to international efforts to combat terrorism and resulted in sanctions against Libya. It also raised awareness of aviation security issues worldwide.