A female police officer was killed by a speeding car that defied orders to stop at a roadblock along the Malaba-Kanduyi road in Busia County.
Police said they are searching for the car following the fatal incident on Monday morning.
The car was fleeing the scene and the driver did not want to stop when flagged down.
Teso North sub-county police commander Joseph Matiku said the driver of the vehicle suspected to be carrying contraband goods from the Malaba border defied orders by police officers to stop at the Koteko roadblock near Kocholya market.
The driver then knocked down one police officer before speeding off towards Bungoma at 3 am Monday.
The deceased officer, Constable Nancy Chepchumba, was rushed to Kocholya sub-county hospital where she was pronounced dead upon arrival, police said.
Her body was moved to Moi Teaching and Referral Hospital Eldoret for post-mortem as the police officers continued to hunt for the driver.
This is the second incident of the kind to take place at the roadblock after another officer was knocked down by a vehicle at the same place two months ago.
The route is usually used for the trafficking of various contraband goods.
They include goods being smuggled from Uganda or to Uganda. Others include narcotics, police say.
The roadblock is meant to address such crimes. A team of detectives has been set up to track the motorist who sped off to an unknown destination.
The team was reviewing various security cameras on the route as part of efforts to trace the driver.
Senior police officers visited the scene as part of investigations into the tragedy amid a planned major operation and revamped roadblock.
Police say they expect a rise in such incidents but are ready for them.
