The Federal Bureau of Prisons has conducted a review of Islamic literature and videos in the prison system and found the majority of the materials were extremist in nature, according to records obtained under the Freedom of Information Act by The Weekly Standard’s Stephen Schwartz. Most of the materials were Wahhabist, the radical sect that is the state religion of Saudi Arabia. Many materials were also from the Nation of Islam.

The review, which involved the surveying of 105 federal prisons, found that only six copies of the Wahhabi version of the Koran, Islam’s holy book, were present, but texts by many other advocates of an extreme interpretation of Islam were plentiful, according to Schwartz’s article in The Weekly Standard.

Among the radical texts was literature by Yousef al-Qaradawi, a radical cleric that has supported suicide bombings, and Sayyid Qutb, whose writings influenced Osama Bin Laden. Schwartz also wrote that there were few texts from more moderate, non-extremist Islamic thinkers.

“Missing from the books on Islam available in federal prison chapels is any semblance of pluralism, though competing schools of thought have characterized Islam from the beginning,” Schwartz wrote.

Dr. Bert Useem recently completed a study that concluded the concern about the spread of radical Islam in the corrections system was overblown. Useem found that Muslim-Americans are highly assimilated and therefore unlikely to be receptive to extremism. He also found the prison population to be “individually disloyal patriots” who would not tolerate such radicalism.

Concern over extremism in the corrections system increased after some Muslim chaplains were found preaching radical views. Schwartz wrote that in 2003, the Justice Department temporarily stopped hiring Muslim chaplains once it was found that the Islamic Society of North America, a controversial organization said by some of being connected to Saudi-supported Wahhabists, was the only group involved in endorsing chaplains to the government.

“In effect, this Wahhabi outfit had become the sole screening organization for Muslim prison chaplains-including some individuals still on the payroll today,” Schwartz wrote.