The allegations have raised concerns about adherence to established procedures and the effectiveness of oversight mechanisms within the energy sector.
According to preliminary findings, investigators are examining the roles played by various officials in the procurement, testing and clearance of petroleum products.
The focus is on whether due process was followed and if any lapses may have contributed to the entry of substandard fuel into the supply chain.
Kosgei said appropriate administrative measures would be taken against those found to have breached regulations or failed in their duties.
However, he did not provide details on the specific nature of the action to be taken against Wafula and Mburu.
The move to initiate administrative action comes amid heightened scrutiny of the energy sector, following earlier developments that saw senior officials step down as investigations intensified.
Authorities have indicated that the process is aimed at ensuring accountability and restoring public confidence in the management of petroleum resources.
The alleged procurement of substandard fuel has sparked widespread concern among consumers and industry players.
Faulty fuel can have serious consequences, including damage to vehicle engines, disruption of industrial operations and increased maintenance costs for businesses and individuals.
Regulatory bodies are mandated to ensure that all imported fuel meets strict quality and safety standards before it is released for public use.
Any breach of these requirements not only undermines trust in the system but also poses potential risks to the economy.
Investigators are also expected to assess whether existing systems and controls were sufficient to prevent such occurrences, or whether gaps in enforcement may have been exploited.
The findings could inform future reforms aimed at strengthening oversight and improving transparency within the sector.
Parliamentary committees and other oversight institutions are likely to take a keen interest in the matter as more details emerge.
Lawmakers have previously called for stricter enforcement of regulations and greater accountability among officials responsible for managing critical national resources.
Kosgei reiterated the government’s commitment to ensuring that all those found responsible are held to account, in line with the law and established procedures.
He emphasised the importance of maintaining integrity in the fuel supply chain, given its significance to the country’s economy.