Unfortunately from the Mail, but:

'The station could face action over the fateful call as under Australian law it is illegal to record someone or publish a taped conversation without the person’s permission'

Read more: http://www.dailymail.co.uk/news/article-2245309/Two-Australian-DJs-royal...

When unforeseen tragic consequences like this happen, and it is found that the law has been broken, then the radio station will be charged.