In 2014, Rabiat and 275 other schoolgirls were abducted by Boko Haram in the town of Chibok. Dozens are still missing.
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No group has claimed responsibility for the attacks which took place on the Quetta-Taftan Highway.
Islamabad said the comments undermine peace and impede the prospect of constructive engagement.
IOM says 13,000 people were forcibly returned to Haiti by neighbouring countries last month despite a surge in violence.