Former US President George Bush warns of danger from domestic terrorists on 9/11 anniversary

On the anniversary of September 11, 2001 attacks, former US President George W Bush warned of a new danger of homegrown terror threats.

On the 20th anniversary of the deadliest attack on U.S. soil, George W. Bush, who was president at the time, warned of a new danger coming from within the country. "We have seen growing evidence that the dangers to our country can come, not only across borders, but from violence that gathers within," Bush said on Saturday at the 9/11 memorial site in Shanksville, Pennsylvania, during a ceremony to mark the anniversary of the Sept. 11, 2001 attacks.