LaGuardia Airport bombing 40 years later: Still unsolved

Before the cataclysmic attacks of Sept. 11, 2001, the deadliest act of terror in the city was the bombing of LaGuardia Airport on Dec. 29, 1975, that killed 11 people and left 75 injured.

Forty years later, the mass killing remains unsolved.

Neither the NYPD nor the FBI, who were involved in the investigation, immediately commented Tuesday on the status of the case. A prime suspect, a Croatian nationalist, was found dead in 2013 after an apparent suicide; he had maintained his innocence in the attack over the decades.