The six are expected to serve for a term of three years.
KDF has been deployed in the recent past to assist with various missions.
There is pressure over the numerous salary delays facing various civil servants.
The Kenyan shilling has been projected to fall against the US dollar, which will impact the cost of living.
Some politicians suggested he developed cold feet and bolted out of the race.
Ruto nominated Erastus Edung Ethekon as the IEBC chairperson last week.
So far, nine individuals have expressed interest in the country's top seat.
They are to appear before the DCI at 11am.
Those allied to Gachagua are demanding his return to office.
The Directorate of Criminal Investigations (DCI) has apprehended three suspects who stormed a company based in Athi-River on February 23 and terrorised them bef