Legal experts say the Australian radio station behind a hoax phone call to the London hospital where the pregnant Duchess of Cambridge was being treated could face criminal charges for airing the conversation.

2dayFm offices in Goulburn Street in Sydney, Australia (Don Arnold/Getty Images)

Last week's prank was widely condemned days after it aired, after the still-unexplained death of a nurse who answered the phone and helped two DJs get confidential information about the former Kate Middleton's health. But when it comes to a potential criminal case, the question is not about the death. It's whether a private conversation was broadcast without the permission of the participants.

Violators could be sentenced to prison, but it's unclear who at radio station 2DayFM or its parent company made the decision to air the call.

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