Around 280 , Roman rule collapsed in much of Mauretania .
Around 280 , Roman rule was never re-established.In 285 , the emperor Diocletian reorganised what was left of the province to retain only the coastal strip between Lixus , Tingis and Septa ( modern Ceuta ) .
Around 280 , Roman rule collapsed in much of Mauretania and was never re-established.In 285 , the emperor Diocletian reorganised what was left of the province to retain only the coastal strip between Lixus , Tingis and Septa ( modern Ceuta ) .