OSAMA bin Laden's son-in-law Sulaiman Abu Ghaith, al-Qaeda spokesman after 9/11, was yesterday found guilty of terrorism.

Blackburn terrorist turned supergrass Saajid Badat was a key witness in the New York trial.

He was supposed to join Richard Reid’s attempted 2001 shoe-bomb airline attack but abandoned the plot after his parents warned him against becoming a terrorist.

Badat did not know Abu Ghaith but prosecutors used his evidence to show the terror supremo knew detailed plans for more air attacks on the US.

Arrested in Blackburn in 2003, Badat had his 13-year-prison sentence cut for giving evidence against his former conspirators.

Abu Ghaith could face a life sentence for conspiracy and aiding al-Qaeda.

The Kuwaiti clergyman, captured in Jordan last year, is the highest-ranking al-Qaeda figure to face trial.