Kentish, along with another unnamed STM employee, has been on police bail since 19 October on suspicion of failure to disclose.
He was at work today and is looking to expedite the tax probe which STM’s lawyers have said “has no merit”.
STM have described the case a tax dispute between two jurisdictions over money STM has already correctly paid.
In the latest statement on the investigation, STM emphasised it involved Kentish’s “capacity as professional director of a client company of STM”.
“Whilst all parties had expected this matter to have concluded quickly, the position has not changed since the Company’s announcement on 30 October 2017,” it continues.
“As such Mr Kentish is exploring the various options available to him to expedite a positive outcome.
“Further review and advice continues to demonstrate that there are no merits to the allegations and the Board of STM remains fully supportive of Mr Kentish.”
A spokesman for STM said Kentish’s options were to be “clarified by advisers” and they would be looking to make further announcements as soon as possible.