News LaGuardia Airport bombing 40 years later: Still unsolved By Cristian Salazar email@example.com Updated December 29, 2015 6:53 PM Print Share fbShare Tweet Email 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. A bomb 'designed to kill and maim' Photo Credit: Newsday / John H. Cornell Authorities at the time of the attack proclaimed that the bomb, deposited in a public locker next to a baggage carousel, had been "designed to kill and maim as many people as possible." The bomb had the force of 20 to 30 sticks of dynamite, and shattered a two-story terminal. The initial investigation focused on some of the groups active in hijackings, urban bombings and other acts of terror in the 1970s: Puerto Rican separatists, Palestinian organizations and other radical groups. Investigators found no credible claims of responsibility. LaGuardia Airport bombing: Search for clues Photo Credit: Newsday / Don Norkett Police officers sift through debris searching for clues and pieces of the device which exploded inside the main terminal at LaGuardia Airport on Dec. 29, 1975. The bomb killed 11 people and injured 75, and was the deadliest act of terror in the city before Sept. 11, 2001. Suspect calls allegations 'reckless rumors' In 2008, he and his wife released a statement to The New York Times, saying they would "welcome a process that would allow us to put these unsupported and reckless rumors to rest once and for all." That would never happen; Busic was found dead of an apparent suicide in 2013 at the age of 67. By Cristian Salazar firstname.lastname@example.org Share on Facebook Share on Twitter Comments We're revamping our Comments section. Learn more and share your input.