Former National Hospital Insurance Fund (NHIF) CEO Geoffrey Mwangi and ex-finance manager Simon Kirgotty and the Web Tribe directors have been released on a Ksh3 million bond or Ksh2 million bail.
They have also been ordered to deposit their passports in court as part of the terms of the bond terms.
All the other accused who were charged will each deposit Ksh1 million bail.
Webtribe, which trades as Jambo Pay, has also been charged as a company but was allowed access to NHIF after court told the revenue system it manages would collapse if the firm is shut out.
Mwangi was re-arrested on Sunday by DCI officers over a Ksh1.1 billion contract for provision of the integrated revenue collection services.
Read: NHIF is Being Blackmailed, Complainant In Tender Feud Does Not Exist
According to DCI George Kinoti, at least 30 sleuths were on Saturday deployed and are on the look out for 17 NHIF officials whose phones have remained switched off from Friday.
Mwangi was released by Nairobi Chief Magistrate Francis Andayi on Sh500,000 cash bail alongside Chief Finance Director Wilbert Kurgat.
The duo was charged with a conspiracy to defeat justice by knowingly preventing the execution of a court order and disobedience of lawful orders contrary to the law.
On Friday, DCI officers arrested former NHIF boss Simeon Ole Kirgotty alongside two others over Sh1.5b graft probe.
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