He said the operation followed credible intelligence on the activities of hoodlums.
Mr Onyeka said the narcotics had been handed over to the National Drug Law Enforcement Agency for investigation and prosecution.
Most of the seized drugs were ketamine, crystal methamphetamine, methamphetamine tablets, heroin, ecstasy, and cocaine.
Cambodian customs police said they arrested two South Korean nationals for an attempt to smuggle 2.27kg of narcotics to South Korea.
The Southeast Asian country has no death sentence for a drug trafficker.
