Report claims Nigerian authorities ignored school warnings
A British team has arrived in Nigeria to help with the search for more than 200 schoolgirls kidnapped by Islamist extremists a month ago.
It comes amid claims from Amnesty International that the Nigerian military had received a warning that there would be a raid and failed to act.
It is a charge the country's information minister said he doubts - however, he said the authorities would still investigate the claims.
The BBC's World Affairs Editor John Simpson reports from Nigeria's capital Abuja.
09 May 2014
- From the section Africa