(CNN) A jury has found Akayed Ullah guilty of last year's attack in an underground walkway of the New York subway system, a spokeswoman for the federal prosecutor's office said Tuesday.

Footage from the tunnel showed Ullah detonate a bomb on his person during morning rush hour December 11, 2017. The tunnel connects two subway lines beneath the Port Authority Bus Terminal in Manhattan.

"Ullah's sinister purpose was to harm and terrorize as many innocent people in his path as possible, by using deadly violence to make a political statement," U.S. Attorney Geoffrey S. Berman said.

Berman said the verdict coming on Election Day "fittingly underscores the core principles of American democracy and spirit."

Read More