Nigeria's President Muhammadu Buhari has ordered an investigation into allegations of sexual abuse at camps where women and children are taking refuge from militant Islamist group Boko Haram.

Mr Buhari's office said he was shocked by the allegations, made in a report released by campaign group Human Rights Watch (HRW), and had instructed the police chief and state governors to immediately launch an investigation.

HRW said it had spoken to 43 victims who had been raped or sexually exploited by security officials and vigilante groups.

The insurgency has left 20,000 people dead and more than two million displaced.

Many of those forced from their homes have fled to camps around the Borno state capital, Maiduguri.

However, the HRW report says some of them have suffered abuse in those camps.

Some said they had been coerced into sex and abandoned when they became pregnant.

Source:bbc.com