Story by the Associated Press; curated by Oliver Darcy.

NEW YORK (AP) — Osama bin Laden’s son-in-law has been convicted in New York of conspiring to kill Americans by serving as al-Qaida’s spokesman after the Sept. 11 attacks.

In this undated image made from video and provided by by Al-Jazeera, Sulaiman Abu Ghaith, is shown. Osama bin Laden's son-in-law and spokesman still maintains that there was justification for the September 11, 2001 attacks orchestrated by al-Qaida upon the United States. (AP Photo/Al-Jazeera)

In this undated image made from video and provided by by Al-Jazeera, Sulaiman Abu Ghaith, is shown. Osama bin Laden’s son-in-law and spokesman still maintains that there was justification for the September 11, 2001 attacks orchestrated by al-Qaida upon the United States. (AP Photo/Al-Jazeera)

The verdict was returned Wednesday for Sulaiman Abu Ghaith (SOO’-lay-mahn AH’-boo gayth) in federal court in Manhattan. The Kuwaiti clergyman could face life in prison when he is sentenced on charges of conspiracy and aiding al-Qaida.

He was captured in Jordan last year and brought to New York for trial. He is the highest-ranking al-Qaida figure to face trial on U.S. soil since the attacks.

Stanley L. Cohen, a lawyer representing Osama Bin Laden's son-in-law, Sulaiman Abu Ghaith, speaks to members of the media outside federal court on March 24, 2014 in New York City. (Andrew Burton/Getty Images)

Stanley L. Cohen, a lawyer representing Osama Bin Laden’s son-in-law, Sulaiman Abu Ghaith, speaks to members of the media outside federal court on March 24, 2014 in New York City. (Andrew Burton/Getty Images)

Videos showing Abu Ghaith threatening America with no end to the “storm of airplanes” were shown to jurors. Defense lawyers say he knew nothing about conspiracies. He testified bin Laden asked him the night of the attacks to be al-Qaida’s spokesman.