It seems like every time a World Cup or an Olympics appears on the horizon, so do warnings from the international press, government ministers and police.
They all express fears that thousands of women will be trafficked to the host nation to satisfy the sexual desires of the crowds.
The same messages have long been issued for the London 2012 Olympic Games.
In January 2010 Tessa Jowell, then Minister for the Olympics in the previous government, told MPs: “Major sporting events can be a magnet for the global sex and trafficking industry; this is wholly unacceptable. I am determined that traffickers will not exploit London 2012.”