GENEVA: UN human rights experts on Tuesday called on Pakistan to refrain from deporting Afghan nationals after Islamabad ordered all illegal immigrants, including 1.73 million Afghan citizens, to leave or face expulsion.

Pakistani authorities, who have given illegal immigrants until Nov. 1 to leave, linked the measures to their allegations that Afghan nationals were involved in several suicide bombings this year.

“We urge Pakistan to uphold the absolute and non-derogable principle of non-refoulement and prevent collective expulsion and forced return,” the experts, a group of UN special rapporteurs, said in a statement.

“The lack of domestic asylum laws and procedures does not absolve states of their obligations to uphold the principle of non-refoulement under international human rights and customary law.” Pakistan has received the largest influx of Afghan refugees since the Soviet invasion of Kabul in 1979.

Pakistan’s diplomatic mission to the UN in Geneva did not immediately respond to a request for comment on the experts’ statement.