Of the 234 women and girls rescued from terrorist group Boko Haram this week, all but 20 are visibly pregnant.

The United Nations has confirmed the horrifying statistic, saying that at least 214 of the women rescued on Thursday have already visible bumps.

Nigerian military rescued the female hostages held by the radical Islamist group in an operation similar to another rescue carried out a week earlier.

Learn more about this shocking development, as reported from TVNZ 1.