According to author Terry McDermott, by late 1998, German intelligence knows all the key names of the al-Qaeda Hamburg cell led by 9/11 hijacker Mohamed Atta and hijacker associate Ramzi bin al-Shibh. This is mostly due to the on-going surveillance of Mohammed Haydar Zammar and Mamoun Darkazanli (see March 1997-Early 2000, Late 1998 and December 1999). It is not clear if the group is seen as an al-Qaeda cell, or just a bunch of radical Islamists. One unnamed senior German intelligence official will say in November 2001, “We only knew them as radical Muslims. This is not a crime.” This person will add, “They might have had contact with followers of Osama bin Laden. This also is not a crime.” [McDermott, 2005, pp. 73, 279] It is unknown if Germany shares this intelligence with the US.