The Directorate of Criminal Investigations (DCI) arrested three people after 10 million in fake United States dollars was recovered at Fedha Estate, Embakasi.
The detectives were acting on a tip-off issued by members of the public when they raided the house and recovered the fake currency.
The three suspects have been identified as Joshua Odhiambo (19 years), Jane Ogenda (20 years) and Dickson Ombaso (27 years).
Detectives also recovered some chemicals that are believed to be used in processing the currency.
They were also found in possession of fake registration plates for motor vehicles and an IPAD labeled Government of Kenya.
The three are awaiting arraignment in court.
In Kirinyaga county, one suspect identified as Anthony Munene Ndambiri was arrested after detectives from the flying squad recovered stolen vehicles.
The vehicles were recovered in Wanguru area in a sting operation that came about after numerous cases of stolen vehicles were reported in Nairobi.