Mr Türk, in a statement, urged the generals to restore constitutional order immediately.
NAPTIP and UNODC have called for collaborative support to end human trafficking in Nigeria.
The number of people entering Ethiopia from Sudan is about 70,000, the International Organisation for Migration (IOM) said.
No fewer than 2.6 million people have been displaced since the start of the conflict on April 15 in Sudan.
The deal clears the way for financial aid of up to €900 million ($1.01 billion) from the EU for economically ailing Tunisia.
The irregular migrants had been in detention for two months.
The federal government has repatriated 21 irregular Nigerian migrants held in Libyan detention facilities.
Since 2014, almost 27,000 people have died trying to reach Europe on Mediterranean routes.
“They are also delivering hygiene supplies and other basic items to people in Mykolaiv and Odesa who have been evacuated and sought shelter in those two towns.
According to the IOM, Chad took in some 80,000 refugees and South Sudan about 69,000.
