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Trade Center Bombing-Anniversary

In this Feb. 26, 1993 file photo, a police officer assists a survivor of the World Trade Center terrorist bombing in New York. On Thursday, Feb. 26, 2015, officials at the Sept. 11 museum will mark the 22nd anniversary of the 1993 World Trade Center bombing that killed six people and injured more than 1,000. (AP Photo/Marty Lederhandler)

Remembering the first World Trade Center attack 22 years later

It was a snowy Friday morning 22 years ago today when terrorists detonated a truck bomb in the parking garage of the World Trade Center's North Tower on Feb. 26, 1993. Six people were killed and more than 1,000 injured in the first attack at New York City's landmark "Twin Towers."

Four of the six killed -- Robert Kirkpatrick, 61, Stephen A. Knapp, 47, William Macko, 57, and Monica Rodriguez Smith, 35 -- were employees of the Port Authority of New York and New Jersey. John DiGiovanni, 45, a dental-supply salesman visiting the World Trade Center, and Wilfredo Mercado, 37, a purchasing agent for Windows on the World restaurant, also died.

Six Islamic extremists, including mastermind Ramzi Yousef, were convicted of carrying out the attack (AP/ABC News)

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