Prime Minister Tony Abbott says he is moving to deny "preachers of hate" entry to Australia, but says it's unlikely any change will be in place in time to stop an upcoming lecture being promoted by the radical Islamic group Hizb ut-Tahrir.

Appearing on Sydney radio station 2GB, Mr Abbott was asked whether the government would ban the organisation, which advocates that all Muslim affairs be administered according to the Shariah rules.

Mr Abbott told Alan Jones he shared the radio host's "frustration and anger" but under the current laws the group, which the Prime Minister declared was "thoroughly objectionable" and "campaigns against Australian values and interests", could not be banned.

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