NEW YORK (AFP) - Slain Al-Qaeda chief Osama bin Laden's son-in-law pleaded not guilty on Friday to terrorism charges.

Sulaiman Abu Ghaith, reportedly a 47-year-old Kuwaiti and allegedly one of the chief propagandists of the Al-Qaeda network, stands accused of conspiring "to kill nationals of the United States," according to the US Justice Department. He was ordered remanded into custody at a federal court in New York.