On this date in 1975, a bomb was detonated in the TWA baggage claim area at New York’s LaGuardia Airport. Eleven people were killed and seventy-five were injured. A Croatian nationalist emerged as a suspect, but there was never sufficient evidence linking him to the crime. The case remains officially unsolved.
New York Times – Terrorist’s Release Reopens Wound of Unsolved Bombing
Wikipedia – 1975 LaGuardia Airport bombing