Ticket sales for controversial Adelaide Fringe show Come Heckle Christ have increased by about 60 per cent since Christian groups began voicing opposition to the act at the weekend .

However, the Islamic Society of South Australia added its support to the Catholic Church's call to cancel the show.

Islamic Society of SA secretary Dr Waleed Alkhazrajy said it would be "blasphemy if a person dressed to show himself as the Prophet Mohammed".

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