The youths were arrested in Tetu after protesting against the appointment of Governor Nderitu Gachagua to the Jubilee Party campaign team.
Carrying placards written “Jubilee under attack”, the youths stood shouting at the entrance of Gititu Secondary School during a tour by the DP on Saturday.
They shouted louder as the Deputy President’s motorcade approached.
Police roughed them up, beat others and dragged some on the dusty ground. Witnesses said those who were attacked cried for help by their counterparts while others fought back in the incident at about 3pm.
They were apprehended and taken to the station but released at about midnight after Ruto’s office intervened, sources said.
But Tetu deputy commissioner Herman Shambi denied reports of police violence saying the youths forced their way into the school where a harambee was taking place.
Shambi said police took swift action and arrested them, but that they were released hours after Ruto left the school.
“Investigations are ongoing since the youths were not from Tetu. They were from Karatina and Majengo slums in Nyeri town. They even had a vehicle,” he said.