Ndii is expected at DCI headquarters after he was last week released on a police bond.
He had been arrested in Diani and brought to Nairobi in a police operation that caused uproar with many terming it harassment.
The DPP’s office intervened and ordered he be released pending investigations. This was after it emerged police were not ready to charge him despite the move to arrest him as he was on vacation with his family. The file will be sent to the DPP for action.
The economist hit back at Uhuru on Friday, after his dramatic arrest in Kwale county earlier this week. Ndii was taken to Nairobi over incitement, a matter that provoked outrage by politicians and pro-democracy activists who warned Kenya was sliding into dictatorship.
Via Twitter the strategist said Uhuru and Deputy President William Ruto should face him instead of being cowards.
"I have been reminded that UhuRuto are wimps cowering behind state power. Let them come out here and we face off mano a mano," he wrote.
Members of the public who responded to his tweet included one Munanyakhi, who said: "So sad you just came from incarceration and you can't tame your tweeting fingers. Next time they come for you, remember to apologise to your daughter in advance for leaving her without a father figure."
Crispus Wachira said: "I may not like your abrasive behaviour but I must also remind you these fans cheering you on, as you duel with powers that be, will not come to your aid when you are incarcerated in one of our penitentiaries."
Eric Kithinji added: "You will be imprisoned for treason and dee in those cells. Joke with your words and actions...you will regret later."
'@Alking25' defended Uhuru and Ruto saying they are wise grownups who "cannot waste their time and energy like your boss does". He was referring to NASA chief Raila Odinga.
"They have a lot to do with their time for Kenyans...I mean the true Kenyans."
Kim Stevenkim wrote: "My friend, don't be narcissistic to law. Ignorance of it isn't a defence. Personal differences shouldn't be brought into public domain."
-The Star