Rights groups have criticised the repatriation drive, warning that mass expulsions risk endangering vulnerable people.

Pakistan has deported more than 19,500 Afghans this month, among more than 80,000 who have left ahead of a 30 April deadline, according to the UN. Pakistan has accelerated its drive to expel undocumented Afghans and those who had temporary permission to stay, saying it can no longer cope.