UK police ask Australians to look at royal prank call

British police said Wednesday they have asked Australian authorities to look into possible charges against two radio DJs over a prank call targeting Prince William's pregnant wife Catherine, which led to a nurse's death.

Jacintha Saldanha, a nurse at the London hospital where the duchess of Cambridge was being treated for severe morning sickness, killed herself after taking the call from Sydney-based radio hosts Mel Greig and Michael Christian.

Catherine, 31, is due to give birth within days.

British prosecutors decided not to bring charges against Greig and Christian, but Scotland Yard has now passed details of its investigation to Australian police to examine whether the pair broke Australian law.

"On 9 July the MPS (Metropolitan Police Service) passed a file to the Australian Federal Police and New South Wales police in relation to a hoax call made to the King Edward VII Hospital on 4 December 2012," it said in a statement.

"The MPS has requested that consideration is given as to whether any offences were committed under Australian legislation."

The DJs called the hospital posing as Queen Elizabeth II and William's father Prince Charles, and Indian-born Saldanha put them through to the ward where Catherine was being treated.

Another employee then revealed details of the duchess' recovery, which were broadcast around the world.

An inquest heard that Saldanha, a mother of two, was found hanged in staff accommodation at the hospital several days later, with marks on her wrist.

In February, Britain's Crown Prosecution Service said there was no evidence to support a charge of manslaughter.

It decided it would also not be in the public interest to pursue lesser charges concerning data protection and malicious communications.

"However misguided, the telephone call was intended as a harmless prank," Malcolm McHaffie of the prosecution service said at the time.

Greig and Christian were taken off the air following the hoax call, although the latter has since returned to the airwaves and was last month controversially awarded a "Top Jock" gong.

Greig is still on an extended leave of absence and her lawyers said Wednesday that she was suing her employer, Austereo, for failing to provide her a safe workplace.