The King Fahd Mosque is a large, Saudi-funded mosque located in Culver City, California, just outside of Los Angeles. The mosque was a gift to the Muslim community of Southern California from Saudi Arabia and Prince Abdulaziz Bin Fahad Bin Abdulaziz Al-Saud, minister of the Departments of State and Cabinet. 
It is owned and operated by the Islamic Foundation of Shaikh Ibn Taymiyyah, which supervised the project of King Fahd mosque since its commencement. The foundation is responsible for its management and future activities.
Honoring Ibn Taymiyyah as this Islamic Foundation does is a clear indication of extremism. Ibn Taymiyyah is an Islamic scholar who died in 1328 and was instrumental in promoting the faith as a violent, theocratic and expansionist doctrine. Ibn Taymiyyah is regularly cited by Sunni Islamist extremists today.
Steven Simon of the Brookings Institute credits Taymiyya with responsibility for the “elevation of jihad—not the spiritual struggle that many modern Muslims take it to be, but physical combat against unbelievers—to the rank of the canonical five pillars of Islam.”
In 2016, the House Intelligence Committee unveiled the findings from the 28 pages of declassified intelligence documents analyzed by the 9/11 Commission. The documents show that hijackers Khalid al-Mihdhar and Nawaf al-Hazmi might have been aided in Los Angeles by a then-Saudi consular official in Los Angeles, Shaykh al-Thumairy, who also served as an imam at the King Fahad Mosque. According to the documents, the mosque was identified by the FBI as a site of “extremist-related activity both before and after September 11.”
In March of 2003, during Operation Iraqi Freedom, Sgt. Hasan Akbar killed two of his fellow soldiers while on duty in Kuwait. It was later revealed that Akbar attended the King Fahad Mosque.
In 2017, Mahomed Akbar Khan was asked to leave his job as director of outreach at the King Fahad Mosque, apparently due to outrage from his hosting of multifaith events that included Jewish leaders.
 King Fahad Mosque Website, “About Us!” Accessed November 7, 2018, https://kingfahadmosque.org/contacts/about-us/
 Simon, Steven. “The New Terrorism: Securing the Nation Against a Messianic Foe.” Brookings Institute. January 3, 2003. https://www.brookings.edu/articles/the-new-terrorism-securing-the-nation-against-a-messianic-foe/
[4 ]CBS Los Angeles, “Possible Link Between Hijackers, Culver City Mosque Questioned In Newly Released 28 Pages From 9/11 Report,” July 15, 2016, https://losangeles.cbslocal.com/2016/07/15/possible-link-between-hijackers-culver-city-mosque-questioned-in-newly-released-pages-from-911-report/
 Joel Mowbray, “The House that Raised Akbar (An army sergeant’s ties to Saudi Arabia),” Free Republic, April 3, 2003, http://freerepublic.com/focus/f-news/884449/posts
 Debra Nussbaum Cohen, “U.S. Muslims Increasingly Harassed for Working With Jewish Groups, Activists Say,” Haaretz, August 31, 2018, https://www.haaretz.com/us-news/.premium-u-s-muslims-increasingly-harassed-for-working-with-jewish-groups-1.6433201