It was largely unknown why Abu Musab al-Zarqawi chose to move into Pankisi Gorge when he could have also struck into Chechnya, where Al-Qaeda's presence was strong. In the build-up to the Iraq War in early 2003, dozens of North Africans were arrested in the United Kingdom, France and Spain on charges of preparing ricin and other chemical weapons. Colin Powell and others trumpeted the arrests as proof of the threat posed by the Zarqawi-Chechen-Pankisi ricin network, which has now been expanded to include the Ansar al-Islam of Kurdish northern Iraq. French and British security officials were astounded by Powell's insistence on February 12, 2003, saying that "the ricin that is bouncing around Europe now originated in Iraq." With the Iraq invasion only weeks away, the source of the ricin threat moved from Georgia to Iraq. Sergei Ivanov reported that the Spanish suspects had been trained in the Pankisi Gorge by Al-Qaeda terrorists and even claimed that Osama Bin Laden may have been hiding somewhere in the Akhmeta Municipality. There were also claims of several Al-Qaeda laboratories producing ricin. Those lacked any evidence however, as the production of ricin required large quantities of castor beans, which were not grown in Georgia.
U.S.-Georgian anti-terrorist operations
On 28 April, 2002 a small Georgian anti-terror unit lead by their U.S. commander ambushed a group of insurgents. It was falsely believed that prominent mujahid leader Ibn al-Khattab was among the dead, according to allegations that Omar Mohammed Ali Al Rammah reportedly withnessed him die in that incident. This was due to his real identity remaining a mystery until after his demise. The quick and violent nature of the operation reportedly sparked fear among Chechen militants in the area, who went into hiding. By October 20, 2002, Georgia had netted about a dozen Arab militants. The Georgians and the U.S. led a serious crackdown on the militants that littered the gorge, capturing an unknown number of combatants. On September 3, 2003, President Eduard Shevardnadze said that the Georgian security forces had established full control over the gorge. Georgia sent 1,000 police officers and security troops to the region late in October, setting up checkpoints and vowing to impose order. Georgian officials also said they planned to build up the number of border troops near Chechnya and Ingushetia, another Russian republic. Russia accused Georgia of allowing Chechen fighters to raid across the border. On June 15, 2003, 15 more Chechen militants entered the area and took refuge in a two-story house. Georgian officials said that more than 30 militants were detained. France cracked down on May 14, 2004 by arresting two Algerians working with chemical and biological weapons. Georgia announced the end of the operation and withdrew its Internal Troops from the region by January 21, 2005.