And the network, Southern Cross Austereo, suspended all prank calls, pulled advertising and ordered a comprehensive review of relevant policies and process.

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Both deleted their Twitter accounts and were taken off the air, but a Southern Cross Austereo spokeswoman said they had "expressed a desire to speak".

BBC: Michael Christian and Mel Greig

The DJs have since apologized, and "mutually decided" to go off the air for an undetermined period, Rhys Holleran, CEO of the Southern Cross Austereo media group, said Saturday during a news conference.

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"We look forward to Mel and MC returning to work when the time is right, in roles that make full use of their talents, " said Rhys Holleran of Southern Cross Austereo, owner of 2Day FM.

BBC: Royal hoax radio show cancelled

In an interview with a Melbourne radio station 3AW, Rhys Holleran - whose company Southern Cross Austereo owns 2DayFM - said his staff had tried several times to make contact with Mrs Saldanha and another nurse at the King Edward VII's Hospital to get their permission to use the prank conversation before it was transmitted.

BBC: DJs Mel Greig and Michael Christian