The mosque has one of the largest congregations in California, with an estimated 2,500 worshipers attending weekly programs and benefiting from a variety of services, including youth programs, an annual summer camp for children, senior workshops and interfaith sports.

A convicted con man, Craig Monteilh of Tustin, accused the FBI of running him as a paid informant in the center from July 2006 to October 2007, and then reneging on its deal with him.

[3] Three center members filed suit against the FBI and the United States in 2011 for violating several of their rights related to electronic surveillance during Monteilh's time as an informant.

[4] The FBI appealed this ruling to the Supreme Court of the United States, which will hear the case during the 2021–22 term.

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