President Salva Kiir is yet under on the receiving end following a UN report that has implicated his government over executions of critics. 

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A report released by the UN this week indicates that two critics of Juba regime were abducted in Nairobi and taken to Juba on a commercial plane where they were executed in a farm believed to belong to President Salva Kiir.

Dong Samuel Luak, a prominent South Sudanese lawyer and human rights activist was last seen at Nairobi’s Central Business District heading to board a bus at 9pm on January 23, 2017.

Aggrey Idri, the chair of Vice President Riek Machar’s Sudan People's Liberation Movement-in-Opposition (SPLM/IO) party was last seen at his residence in Kilimani, Nairobi on January 24, 2017.

“These people were apprehended in Nairobi. They have not been brought to us. We are not responsible for any disappearance of any South Sudanese around the world,” Michael Makuei, South Sudan’s Minister of Information, told international wire service Reuters on Wednesday.

But the UN has accused Juba of not being sincere, adding that it should take responsibility over the two deaths. Foreign Affairs minister Monica Juma and PS Kamau Macharia were unavailable for comment on Thursday.

“Once in the South Sudanese capital, the two men were taken to an ISB detention facility in the compound that serves as the National Security Service headquarters, commonly known as “the Blue House,” says the investigation report.

“It is highly probable that Mr Idri and Mr Luak were executed by ISB agents at the Luri facility on January 30, 2017 on orders from Lieutenant General Akol Koor Kuc,” notes the UN.

President Kiir has struggled to stamp his authority in Africa's youngest nation in as many years. Recently, he visited Vatican with his former deputy Riek Machar, whose rebels have made South Sudan ungovernable, and were asked to steer peace processes.

Recently, Kenya brokered a deal between the two but the terms and conditions for formation of transitional government are yet to be implemented. Many South Sudanese people stay in Kenya.