Following the discovery of poison recipes during a series of raids on Islamist extremist fundraising networks (see September 26, 2002), British authorities hold a summit to discuss the problem of a potential terrorist attack by Islamist extremists. The meeting is attended by 200 officials from the security and intelligence services, senior civil servants, and key personnel in the transport industry, especially the London Underground. One of the possible scenarios outlined is an attack on the Underground using poison gas. [O’Neill and McGrory, 2006, pp. 239]