Share prices for Southern Cross Media Group dropped by as much as 8% Monday following the controversy, according to Australian media reports.

A number of big advertisers pulled their spots from 2DayFM before it took the decision temporarily not to run ads.

Profits for the media group as a whole were 95 million Australian dollars in the year to June 2012, up from 64.1 million a year earlier, according to the company's 2012 annual report. It was the first full-year earnings report since Southern Cross Media and Austereo Group merged in May 2011.

Holleran last week said he was "deeply saddened" by the nurse's death but defended the legality of the station's action, saying he was "very confident that we haven't done anything illegal."

The Australian Communications and Media Authority, the country's media regulator, has said it will be "engaging with" the network "around the facts and issues surrounding the prank call."

London's Metropolitan Police have contacted Australian authorities in relation to the call, but "are not discussing about what or with who" they're talking, a spokesman told CNN.

A spokeswoman for New South Wales Police in Australia told CNN: "As the investigation into the death of London nurse Jacintha Saldhana continues, New South Wales Police will be providing London's Metropolitan Police with whatever assistance they require."