Interior Cabinet Secretary is battling grassroots resistance even as he seeks to stamp authority in the new docket.
A fortnight ago, a host of Gusii leaders led by North Mugirango MP Joash Nyamoko termed him 'tenant' in Nyamira in relation to his background.
And in his continued crackdown on opposition leaders, Matiang'i is now facing criticism with NASA leaders calling for his resignation.
"He just comes with own rules an forgets Kenya is a country governed by laws. This habit must stop forthwith," said ODM Treasurer Timothy Bosire.
His Borabu counterpart Ben Momanyi said: "I respect the CS but I think he is going overboard. He must treat all Kenyans with dignity."
Reports indicate that at least six youths allied to NASA are held in Kisii Central Police on grounds that they were spearheading NASA activities.