Police have arrested over 379 illegal grazers in Laikipia county just a day after British rancher Tristan Voorspuy was shot dead.
Cabinet Secretary for Interior and Security General Joseph Nkaissery says police have further cleared 16 ranches of illegal herders.
Nkaissery has further accused area politicians of contributing to tension in Laikipia by inciting the locals.
Numerous attacks have taken place in drought-stricken Laikipia region in recent months as armed cattle herders searching for scarce grazing have driven tens of thousands of cattle onto private farms and ranches. At least a dozen people have been killed.
The most recent victim was Tristan Voorspuy, a British army veteran who held dual Kenyan and British citizenship and ran a company called Offbeat Safaris.
British High Commissioner to Kenya has urged the Kenyan authorities to take all necessary steps urgently to restore law and order, and to protect life and property in the area.