The arrests were made during searches at the sports administrator's office in Delhi's Lodhi Road area, they said.
The probe agency has arrested Director Sports Authority of India S K Sharma, Junior Accounts Officer Harinder Prasad, Supervisor Lalit Jolly and UDC V K Sharma, besides private contractor Mandeep Ahuja and his employee Yunus, the officials said.
It is alleged that bills of Rs 19 lakh were pending to be cleared by the SAI officials for which a demand of three per cent was being made.
The search operation is still underway.
The accused staff was responsible for procuring all office stationeries and were dealing with tenders of all electronic equipment and furniture required for SAI offices.
The irregularities were going on in SAI for more than a year, the source said.
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