(CNN) American businessman Jason Spindler survived the September 11 attacks in New York only to die this week in another act of terror.

He would have turned 41 next week, his parents told CNN affiliate KTRK

Men armed with guns and explosives burst into Nairobi's DusitD2 compound, killing at least 21 people in an attack that lasted hours and ended Wednesday morning, Kenyan President Uhuru Kenyatta said.

DusitD2 is an upmarket cluster of shops and hotel facilities in the Kenyan capital, his company said.

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