After his death, Azzam's militant ideology and related paramilitary manuals were promoted through print and Internet media by Azzam Publications, a publishing house that operated from a London post office box and an Internet site. Both were shut down shortly after the September 11 attacks and are no longer active, though mirror sites persisted for some time afterwards. Babar Ahmad, the administrator of azzam.com, was extradicted from the UK to the USA where he pleaded guilty to "conspiracy and providing material support to terrorism."