The agency noted that stepping down from public office does not shield any individual from prosecution if evidence establishes their involvement in wrongdoing.
Investigators are currently examining claims that substandard or irregularly procured fuel may have entered the Kenyan market, raising concerns about compliance with established procedures.
Authorities are also seeking to establish whether there were lapses in oversight, manipulation of systems or deliberate actions that allowed questionable cargo to be cleared and distributed.
The investigation is expected to cover the entire supply chain, including procurement, testing, storage and release of petroleum products.
The DCI reiterated its commitment to conducting a thorough and impartial investigation, warning that no individual would be spared if found to have violated the law.
The developments come amid heightened scrutiny of the energy sector, with the fuel importation scandal drawing widespread public and political attention.
Concerns over the quality and integrity of fuel supplies have prompted calls for swift action and transparency.
The resignation of the three senior officials had been viewed by some as a significant step in addressing the crisis.
However, the DCI’s statement makes it clear that the process of accountability extends beyond administrative action and includes potential legal consequences.
Stakeholders in the sector have called for a comprehensive investigation to restore confidence in the management of petroleum resources.
The outcome of the probe is expected to inform any further action, including possible prosecutions and policy reforms.
The DCI urged anyone with relevant information to cooperate with investigators, noting that public support is crucial in uncovering the truth and ensuring justice is served.
The agency also assured the public that the investigation will be conducted in accordance with the law, with due regard for fairness and due process.