1975 LaGuardia Airport bombing

1975 LaGuardia Airport bombing

Company type	Terrorist attack
Industry	Aviation, airport security
Founded	December 29, 1975 (1975-12-29)
Fate	Unresolved case
Headquarters	Queens, New York City , United States

On December 29, 1975, an explosive device detonated close to the TWA baggage claim area at LaGuardia Airport in New York City, resulting in 11 fatalities and 74 injuries. The case remains unresolved, with investigators suspecting either anti-Yugoslav Croatian militants or agents linked to the Yugoslav government attempting to undermine opposition groups. This incident took place during a turbulent era marked by multiple terrorist acts across the United States, including assaults in New York and Washington, D.C., as well as two assassination attempts targeting President Gerald Ford.

This bombing represented the deadliest attack by a non-state actor on U.S. territory since the 1927 Bath School incident and was the most lethal bombing in New York City since the 1920 Wall Street bombing, until it was eclipsed by the events of September 11.

Attack

At roughly 6:33 p.m., an explosive device, estimated to be equivalent to 25 sticks of dynamite, went off inside a coin-operated locker near the TWA baggage reclaim zone. The explosion caused severe fragmentation wounds and shattered reinforced concrete structures along with plate glass windows, leading to all 11 deaths and numerous injuries. A fire ignited by the blast took firefighters over an hour to extinguish.

The casualty count was somewhat reduced because most passengers from two recently arrived flights had already exited the vicinity. Those who suffered casualties were mainly airport staff, individuals awaiting transportation, and limousine drivers ranging in age from 25 to 72.

Aftermath

One eyewitness, H. Patrick Callahan, a 27-year-old attorney from Indianapolis present near the blast site, recounted the immediate effects of the explosion, including intense dust clouds and temporary hearing impairment. Callahan noted that the bomb seemed to have been placed inside lockers adjacent to the luggage conveyor belt and described the act as "evil."

The attack drew condemnation from Pope Paul VI and President Ford, who conveyed profound sorrow and directed FAA Administrator John McLucas to strengthen security measures at airports. New York City Mayor Abraham Beame pledged to bring those responsible to justice.

In response to this event, airports across the country—including those in Washington, Cleveland, and St. Louis—were evacuated following numerous false bomb threats.

Investigations

The inquiry was led by Queens Chief of Detectives Edwin Dreher and became the largest NYPD investigation at that time, involving a force of 120 NYPD detectives alongside 600 FBI agents, ATF officials, and Port Authority personnel. Investigators concluded that the bomb likely contained TNT or plastic explosives and was detonated using common household items such as a Westclox alarm clock paired with an Eveready 6-volt lantern battery. A political activist recently released on parole was investigated but cleared due to a verified alibi.

Early cleanup efforts that removed victims and debris posed significant obstacles for investigators. Additionally, multiple hoax calls warning of further attacks complicated emergency responses.

An anonymous individual claiming association with the Palestine Liberation Organization (PLO) took responsibility for the bombing; however, the PLO denied any role and condemned the incident, suggesting that the claim was intended to disrupt forthcoming United Nations discussions concerning Palestinian matters.

Other groups suspected included organized crime syndicates like the Mafia, F.A.L.N., and the Jewish Defense League; nonetheless, no direct evidence connected them to this attack. Parallels were drawn between this bombing and a 1976 hijacking at LaGuardia Airport carried out by Croatian group OTPOR. Zvonko Bušić, a convicted Croatian ultranationalist involved in a separate bombing incident, was considered a suspect but was never formally charged in relation to this case.

Some theories propose that Yugoslav secret service operatives orchestrated the attack as a false flag operation designed to discredit Croatian dissidents. Others speculate that interference by FBI agents protecting informants may have impeded progress toward solving the case.

Without any credible party claiming responsibility, investigators theorized that the bomb detonated either prematurely or later than intended, missing its planned timing when fewer individuals would be present.

The Air Transport Association offered a $50,000 reward for information leading to arrests connected with this bombing. As of 2023, this case remains officially unresolved.

See also

• Crime in New York City
• Domestic terrorism in the United States
• List of terrorist incidents in 1975
• List of unsolved murders