Kikuyu Member of Parliament Kimani Ichung'wah on Sunday hit out at former Jubilee Party interim Vice Chairman David Murathe following his resignation.

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Murathe quit his powerful position saying there would be a conflict of interest if he continues to serve alongside Deputy President William Ruto, the man he insists must retire with President Uhuru Kenyatta in 2022.

The former Gatanga MP argues Ruto is ineligible to vie for the top seat in the next general election on grounds he has served as Deputy President for two consecutive terms.

He has threatened to move to the Supreme Court to seek an interpretation on the DP's candidature and vowed to launch 'Stop Ruto Movement' aimed at preventing the Jubilee deputy party leader from succeeding Uhuru.

"I now find that it is no longer tenable to stay on as the party vice-chairman, given that I will have to sit in the same National Executive Council with a man I am taking to court to block from running for president," Murathe said noting he had already tendered his resignation letter to Party Secretary-General Raphael Tuju.

The unexpected announcement was met with criticism from Ichung'wah who had no kind words for his former party boss.

"#MuratheResigns and claims he can’t be gagged. How can a vomiting broker with a full stomach be gagged? The Chinese contractors are still in town! Ulevi mbaya," he tweeted.

The second-time legislator added: "@DMurathe who has gagged you save for your ulevi illusions? Go carry on with your brokerage trade, there nobody gags you save for your greed! #walevinetwork."