The U.N. human rights office has asked Algeria to stop the collective expulsions of thousands of migrants, mainly from sub-Saharan Africa.
Between March 8 and April 19, the U.N. human rights office reports Algerian authorities carried out at least six mass round-ups of sub-Saharan African migrants in Oran, Duira and Boufarik.
Spokeswoman Ravina Shamdasani said raids reportedly are carried out on construction sites, in neighborhoods where migrants live, and some are picked up in the street and detained.
Shamdasani said many of the migrants were not allowed to pick up their belongings before they were expelled and had to leave everything they had behind.
She says some migrants were transferred rapidly to Niger.
Others, she said were detained in reportedly inhuman and degrading conditions in military bases.