Two Nigerians and a Tanzanian were arrested by police on Friday for allegedly engaging in electronic fraud.
Via Twitter, the Directorate of Criminal Investigations said the crime cost local banks huge amounts of money.
Details were not given but police said that the money in question was withdrawn outside Kenya.
They said ATM cards, laptops and cheque books were among the items they found after arresting the three, whose names are Uduebor Uche, Omari Abby Kajuna and Adebowaje Oluwafemi.
“The suspects are in custody and will be arraigned on Monday,” a tweet stated, noting an intensified operation to weed out electronic fraudsters.
In July, five people were charged with defrauding a Safaricom subscriber of Sh1.9 million.
Joseph Kuria Kariuki, Grace Wanjira Mwehia, Meshack Okoth Okuta, Jesse Wanjuki Gitonga and Philip Kogi Njau allegedly defrauded Stanley Kiarie Wanjiku of the money that was obtained from two bank accounts at Family Bank’s River Road West in Nairobi County.
Authorities have heightened operation to nab criminals including SIM card fraudsters.
Estimates show that banks and telecommunication companies could be losing between Sh15 billion and Sh20 billion annually through fraud.
As more cases were reported last year, the financial sector spent Sh21.2 billion on measures against the vice.