The debate whether or not to amend the constitution to pave way for parliamentary system of government continues to backlash on President Uhuru Kenyatta barely a month after his historic reconciliation with Raila Odinga.

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While contents of the deal remains anonymous, Deputy President William Ruto has sent a warning signal, insisting that there is a plot to change the constitution to introduce a powerful PM post.

At South Mugirango on Sunday, area MP Sylvanus Osoro, who has since shifted his allegiance to Ruto, led a section of MPs in criticising the move.

"We are aware of the plot by children of the rich to change the constitution to create positions for themselves through a referendum," he said in reference to Kenyatta, Moi and Odinga families.

He further said: "Such secret cards will not work. The sons of the peasants must also have their say. If you want to become PM just because you've contested for long, that can't work."

On her part, senator Millicent Omanga. who has been pushing for Gusii unity said: "We can't allow those on top to change the constitution just because they want to shortchange someone."

Even though neither Raila nor Uhuru have spoken about constitutional changes, ODM MPs have hinted a possibility to push for referendum drive.

The presence of Tiaty MP William Kamket, who authored the constitutional amendment bill, in Raila's meting with Daniel Moi, has raised concerns over Kenyatta's hand in the bill.