Residents of Nyabigege in South Mugirango, Kisii County, on Monday protested over insecurity in the area.
The residents lit bonfires on Kisii-Migori highway paralysing traffic for several hours.
The demonstration follows the killing of two men guarding a garage in the area on May 31, 2018.
The two were shot dead by gangsters suspected to be police officers.
Former area councillor Duke Gwaro who led the protests called for an overhaul of the Administration Police camp at Nyachenge, accusing the officers there of complicity in the gruesome murder.
An AP officer’s jacket and a regular policeman’s cap were recovered at the scene of the crime.
Mr Gwaro said this pointed to possible suspects and urged Interior CS Fred Matiang'i to have investigations hastened .
"We want action, and it should come soon. Several days have passed with no feedback on what the government is doing regarding this,” he said.
He said security agencies have failed to conduct investigations and bring the suspects to book.
Area ward representative Daniel Apepo described the murder as painful .
He called for quick investigations and arrest of the suspects.
He also accused police in the area of lethargy, saying they are only directing their energy to fighting illicit brews.
He asked that they be transferred immediately if security in the area is to improve.
"On this I join my people in asking that they may be transferred," Mr Apepo said.
Tabaka deputy county commissioner James Wambua promised quick investigations into the incident and called for calm.
"Already we have begun investigations. It may take long but justice will done," he told the protesters.
He also promised to reshuffle the AP officers stationed at Nyachenge.