Over the weekend, Trans Nzoia county speaker Joshua Weyunga was injured after he was hit by a stray bullet during a public function in Kolongolo villange.
The officer opened fired at the protesters living scores injured including the county speaker has been arrested.
Drama ensued after the officer was allegedly attacked by locals who wanted to free a man he had arrested.16 officers are said to have been injured in the incident, including GSU officers who had been called in for back up.
Dan Juma, the man at the centre of the confrontations, had been cuffed by the police and was being led away to Endebes police station on claims of having assaulted a woman.
Mr Juma managed to disappear with the cowd while still in handcuffs and at the time two villagers had been shot and their bodies loaded onto a police vehicle.Villagers stoned the police car damaging it and forcefully carried away one dead body.
Scores were injured by stray bullets, including the county speaker, and were taken to various hospitals for treatment.Police have launched a search for the escaped suspect, Mr Juma.
Inspector General of Police Jospeh Boinnet has also asked IPOA to investigate the matter.
The arrest comes just days after the government denied extra judicial killing policy in the police force.