Walter Onchonga Mong'are, also known as Nyambane, is no longer authorized to conduct business on behalf of the State Department of Foreign Affairs.
The former Presidential candidate was appointed to serve as Director of Programs, Advocacy, and Outreach.
Foreign Affairs Principal Secretary (PS) Dr. Korir Singoei announced on Wednesday in an internal memo marked as highly urgent.
It was sent to all director generals, heads of missions, and departments at the Ministry of Diaspora and Foreign Affairs.
"This is to inform you that Walter Onchonga Mongare Director of Programmes (Advocacy and Outreach) is no longer authorized to act in any capacity on behalf of the State Department or myself," Korir said in the memo.
"This is therefore to instruct you to refrain, with immediate effect, from any official interactions and/or engagement with Mr..Mongare," said Korir in the memo copied to Prime Cabinet Secretary and Foreign Affairs CS Musalia Mudavadi.
The Independent Electoral and Boundaries Commission (IEBC) revoked Umoja Summit Party Presidential candidate Walter Mong'are's nomination certificate after he failed to comply with a summons to clarify his academic qualifications.
Mongare was the first candidate cleared by the IEBC on May 30, 2022.
The celebrated comedian then closed ranks with President William Ruto which is said to have landed him the plum job at the Ministry of Foreign Affairs.