"Upon search, we found the vehicle to be carrying 50 bags of a suspicious green substance, believed to be a narcotics substance," he said.
Nyoike said that the consignment was traced to Tanzania and was destined to Meru town.
"The two individuals apprehended during the operation are currently in custody at the Nanyuki Police Station, awaiting arraignment in court on Monday," he said.
He issued a stern warning to individuals involved in the illicit drug trade.