Four jihadist prisoners escaped from a Mauritanian prison in the capital, Nouakchott, after killing prison guards, the interior ministry has said.
The incident occurred on Sunday night amid a reported fire exchange in which the two guards were killed and two others wounded.
The authorities have tightened security around the prison and a hunt for the fugitives is under way.
The interior ministry has urged the public to report any information that could help apprehend the fugitives.
Source: BBC