Police on Sunday arrested a man and seized 2.5 kg of cocaine valued at Sh9 million.
Alex Opondo was arrested in Roysambu just few hours after he arrived in the country from Uganda.
Detectives said the suspect had arrived from Uganda with the drugs wrapped in a packet of soya beans, which he claimed were for his consumption.
He was, however, seized before he could change the package.
He is expected to be charged in court on Monday.
Last week, a Kenya Airways employee and another man were arrested with drugs at a sports club in Ruaraka which is said to have been sent as a parcel from Los Angeles, USA. The two will be also be charged in court on Tuesday.
Another Kenyan drug smuggler was arrested at Suvarnabhumi International Airport in Thailand after swallowing 68 capsules of cocaine.
Glenn Chibasellow Ooko, 43, was arrested after it was discovered he had 1,200 grams of the drug on him.
Ooko is believed to have been hired by a Nigerian national, Joseph Ukpa Osita, to deliver the drugs to Southeast Asian countries.
He had flown from Ethiopia to the Thailand where an X-ray showed dozens of items in his stomach. They were found to be filled with cocaine.
Within the region, traffickers now use roads as opposed to airports.
The most commonly trafficked narcotics from Tanzania and through Uganda is heroin. Cocaine is also trafficked from the two countries.