The authorities in Sweden are making plans to expel as many as 80,000 failed asylum-seekers, the interior minister has been quoted as saying.
Anders Ygeman said charter aircraft would be used to deport the migrants but it would take several years.
Some 163,000 migrants applied for asylum in Sweden in 2015, the highest per capita number in Europe.
The numbers have fallen significantly since Sweden imposed tighter border controls this year.
Along with Germany, the Scandinavian country is a prime destination for refugees and other migrants entering the EU illegally.