Cumbria's Police Crime Commissioner Richard Rhodes has apologised for spending £700 of public money on a chauffeur-driven Mercedes, but denies influencing the investigation into the suspected whistleblowers.
Cumbria Police raided a property and arrested a third alleged "whistleblower" on Thursday over leaked expenses following the arrest and suspension of two police workers last week.
"It would be completely inappropriate for me to try to find out what was going on or influence that process.
"At no point have I endeavoured to influence the investigation that the Chief Constable and his colleagues are undertaking.
"The PCC has no business in that sort of activity."Nobody, nobody will accuse me of exceeding my brief."
More top news
The inquests into the car crash deaths of Warrington band Viola Beach and their manager has started.
Victoria Beckham's youngest son had his track "If Every Day Was Christmas" premiered on Capital FM on Wednesday morning.
The Terracotta Warriors will be displayed in an exhibition at Liverpool’s World Museum in 2018.