An Islamic centre south of Brisbane has condemned the "traitorous actions" of an insider who exposed its ties to firebrand Perth preacher Mohammed Junaid Thorne.

The Courier-Mail revealed on Saturday the iQraa Islamic Centre at Underwood this year "promoted" and helped raise funds for two "sermons" by Thorne, a vocal supporter of jihad.

The centre also hosted a lecture called "The Muslim Community and ASIO – What you need to know" in which advice was given about the legal obligations of co-operating with the security organisation.

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