The five were arrested on Friday morning at the Brackendowns Police Station by the Hawks and the Independent Directorate.
Deputy Chief Justice Raymond Zondo initially said Phetolo Ramosebudi did not comply with his instructions to furnish the commission with a full affidavit.
Former Transnet group treasurer Phetolo Ramosebudi takes the stand at the state capture inquiry.
Group general manager of finance Edward Thomas was notified of his suspension last week.
Transnet's group treasurer Phetolo Ramosebudi resigned on Thursday after the parastatal's board served him with notice of suspension earlier this week.
Transnet board member Edward Kieswetter says Ramosebudi was served with notice of suspension after he was implicated in investigations by the parastatal.
