A Kenya Defence Forces soldier attached to Kalonzo Musyoka's team was allegedly detained, stripped and tortured by South Sudan People’s Defence Forces while in the course of duty.
The officer who could only be identified as Major Chemjor was among the South Sudan peace monitors and was captured on Tuesday.
Reports from the country indicate that the major and his colleagues attempted to access a military training centre to investigate an alleged violation of the peace deal in the country when they were detained.
During their four hour detention, the team was blindfolded, handcuffed, stripped off their clothing and physically assaulted.
On Thursday, Foreign Affairs Principal Secretary Macharia Kamau expressed that he was deeply upset by the incident.
"We are shocked and appalled at the reports that we are getting. We are still investigating the matter to determine the integrity of the information that we have received," he stated.
He continued, "Should this information be found to be true, we shall take the necessary and resolute action commensurate with the nature of the occurrence.”
In a protest letter to Dr Workneh Gebeyehu, the chairperson of IGAD Council of Ministers, the team’s chairman Maj. Gen. Desta Abiche Ageno called on the organization to publicly condemn the incident.
He further demanded the Transitional Government of National Unity (TgoNU) to immediately investigate the crime and hold the perpetrators to account.
The team is part of Ceasefire and Transitional Security Arrangements Monitoring Mechanism (CTSAMVM).
The Mechanism reports to the IGAD Council of Ministers and the Joint Monitoring and Evaluation Commission (JMEC), to which former Vice President Kalonzo Musyoka was appointed to.
Their work is to monitor the implementation of the cessation of hostilities and peace agreements President Salva Kiir and several opposition groups have recently signed.
In November, a Kenyan Catholic Priest serving in a church in South Sudan was found brutally murdered.
Gok State Information minister John Madol revealed that Father Victor Luka Odhiambo was assaulted and then killed by armed men.