The groups had breached the private ranch and got in before they started to fight.
This prompted police to rush there and managed to disperse them amid tension.
Police dismissed claims the ranch is owned by the former first family.
The ranch is owned by Nairobi businessman Stanley Kinyanjui.
“The ranch is owned by a group led by Stanley Kinyanjui and not Kenyattas as claimed,” said one official.
Police said security agencies were monitoring the situation, which he said was calm.
Police said the invasion was a result of a dispute between two groups that differed over money collected from sand harvesting.
Narok East Sub-County Police Commander Jared Marando said police on patrol came across a group of about 150 rowdy men armed with rungus and swords near the Ketraco junction on the Narok-Maai Mahiu road.
“It was a dispute over money collected from lorries after the sale of sand,” said Marando.
He added there were no casualties reported on either side.
The ranch has been an emotive issue locally, with the pastoral Maasai community claiming ownership of the ranch.
