Child in Bangladesh
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Activists target Bangladesh child marriages

25 April 2012 Last updated at 04:26 BST

It is estimated every three seconds somewhere in the world a girl is forced to marry against her will.

In Bangladesh 20% of girls become wives before their 15th birthday.

Now campaigners are stepping up their efforts to put a stop to the practice.

The BBC's correspondent Angus Crawford got exclusive access to one attempt to halt a wedding.