Hawks spokesperson Brig Hangwani Mulaudzi confirmed that the suspects were contacted on Tuesday by detectives from the serious economic offences unit.
"They were arrested Wednesday morning after they surrendered to the Hawks officers," he said.
Court papers indicate that the suspects include Agrizzi, former correctional services commissioner Linda Mti and former correctional services CFO Patrick Gillingham.
Parliament’s police portfolio committee welcomed the arrests. Chairperson Francois Beukman said the arrests were an indication of the new Hawks leadership's commitment to deal with allegations related to organised commercial crime and corruption.
"The Hawks investigators should be commended for their hard work and commitment to the rule of law," Beukman said.