Some 300,000 Malians have sought refuge in Mauritania's Hodh Chargui region since a security crisis began in 2012, fuelled by violence from jihadists, local criminal gangs and pro-independence groups

Some 300,000 Malians have sought refuge in Mauritania's Hodh Chargui region since a security crisis began in 2012, fuelled by violence from jihadists, local criminal gangs and pro-independence groups