DCI detectives have arrested seven Chinese nationals who have been operating businesses out of Gikomba Market.
A statement from the CS's office outlined that the seven had been deported in accordance with the law after Dr Matiang'i signed their deportation orders.
"Upon further interrogation, seven Chinese nationals were found to have vagrantly flouted immigration rules.
"Officers established that three of them had no valid work permits while the other four have been engaging in employment and other income generating activities unauthorized under their respective work permit classes. Consequently the Cabinet Secretary in charge of immigration has signed deportation orders as recommended by law," the statement read in part.
Anger over Chinese traders taking over Gikomba, Nyamakima and Kamukunji
Traders and general members of the public earlier in the week raised concerns over the growing dominance of Chinese traders within the Kenyan major city markets.
The uproar prompted CS Matiang'i to give the deportation order while he officially opened the Nakuru Immigration office where passports will now be issued.
"It is illegal for foreigners to engage in local trading in Kenya. We do not have a classification of foreign traders coming to Kenya to do hawking or local trading. we will escort then to the airport, bid them bye and ensure they have their dinner at their countries by tomorrow evening," the CS stated.