Six MPs have accused Internal Security Cabinet Secretary Joseph Nkaissery of taking sides in a land dispute in Naivasha.
The MPs said they will start the process of censuring the CS for "abdicating his duties".
Ferdinand Waititu (Kabete), Kimani Ngunjiri (Bahati), John Kihagi (Naivasha), John Kiragu (Limuru), Mburu Kahangara (Lari) and Peter Njoroge (nominated senator) were angered by the attack on two elderly men by a group of Masaai youth at Utheri wa Lari in Mai Mahiu.
The legislators who visited the two patients at the Naivasha Sub-County Hospital accused the CS of taking sides in the dispute.
They wondered why security officers at the 22,000-acre farm were withdrawn allegedly on orders from "high offices", only for the farmers to be attacked.
Members of the Kikuyu and Maasai communities had been involved in a protracted court battle over the ownership of the land until last year when the High Court awarded it to the farmers.
Mr Waititu hit out at Nkaissery for "openly taking sides in the land dispute despite the court ruling".
Waititu vowed that owners of the land would not vacate the farm, which they acquired legally. He asked President Uhuru Kenyatta to intervene to end the bloodshed.
"This land was bought 40 years ago and the High Court has ruled in favour of the farmers but the CS for Internal Security is taking sides," he said.
Mr Ngunjiri said 13 people had died so far in the dispute surrounding the farm and said they would not allow more people to be killed.
An emotional Ngunjiri wondered why security officers were removed from the farm. "We also have votes just like other people who are threatening the President and we want security so that our people can have justice," he said.
Mr Kihagi, who is also a member of the parliamentary committee on land, questioned why the committee's report on land disputes had not been implemented.
He expressed concern over the increase in land disputes in and around Naivasha and said they were creating unnecessary tension.
And the MP for Limuru termed the attack on the elderly men barbaric and expressed fear that it could affect the Standard Gauge Railway line, which that passes through the land.
"Some people are using politics to try and take over other people's land and as MPs from Central Kenya we shall not allow this," Kiragu vowed.
His sentiments were echoed by his Lari counterpart who accused Nkaissery of failing to protect all Kenyans.
"When he was sworn in, the CS promised to protect all Kenyans but he is openly taking sides in the issue of Utheri wa Lari. We shall not be cowed," said Kahangara.
