The Public Service Commission defended the shortlisting and interviewing of some individuals over the retirement age of 60 on Friday, January 31, saying the position of Principal Secretaries is different from other civil servant posts.
The interviews come amid a looming purge of President William Ruto's PSs to create room for allies of the opposition chief, Raila Odinga.
It is thought that at least 10 Principal Secretaries are on the chopping board.
The week-long interviews of 109 candidates shortlisted for the positions were concluded on Friday.