The Tablighi Jamaat has been described as "a conduit and a fertile recruiting ground for jihadi organizations such as Al-Qaeda and Lashkar-i-Taiba". However, Tablighi Jamaat itself has not been accused of terrorism by US officials. Leaders of the Tablighi Jamaat have denounced Al-Qaeda. According to Alex Alexiev, "perhaps 80% percent of the Islamist extremists have come from Tablighi ranks, prompting French intelligence officers to call Tablighi Jamaat the 'antechamber of fundamentalism.'"
Tablighi members who have been charged with terrorism include: Zacarias Moussaoui (charged in the United States in the 11 September attacks), Hervé Djamel Loiseau (French citizen found in Afghanistan), and Djamel Beghal (Algerian-born French citizen and Al Qaeda member who was convicted of plotting to blow up the U.S. Embassy in Paris), Syed Rizwan Farook. In a foiled January 2008 bombing plot in Barcelona, Spain, "some media reports" stated that a Muslim leader in the city stated that the fourteen suspects arrested by police in a series of raids (where bomb-making materials were seized) were members of the Tablighi Jamaat. Other terrorist plots and attacks on civilians that members of Tablighi Jamaat have been connected with include the Portland Seven, the Lackawanna Six, the 2006 transatlantic aircraft plot, the 7/7 London bombings, the 2007 London car bombs, and 2007 Glasgow International Airport attack.