LONDON – It started out as a joke, but ended in tragedy.

The sudden death of a nurse who unwittingly accepted a prank call to a London hospital about Prince William’s pregnant wife Kate has shocked Britain and Australia, and sparked an angry backlash Saturday from some who argue the DJs who carried out the hoax should be held responsible.

At first, the call by two irreverent Australian DJs posing as royals was picked up by news outlets around the world as an amusing anecdote about the royal pregnancy. Some complained about the invasion of privacy, the hospital was embarrassed, and the radio presenters sheepishly apologized.