ONE of Britain’s most senior organised crimebusters has been suspended over allegations of misconduct.

       Nikki Holland, National Crime Agency’s director of investigations, is said to be facing claims over data breaches, bullying and misusing funds.

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       NCA's Nikki Holland, director of investigations, is said to be facing claims over data breaches, bullying and misusing funds

       It is understood an internal complaint led to the NCA — dubbed Britain’s FBI — referring the allegations to police watchdog the IOPC a fortnight ago.

       A source described the accusations, also against a more junior officer, as “complex”.

       They added: “They are being treated with the utmost seriousness and have understandably caused shock and dismay within the agency.”

       One allegation is thought to relate to an emergency blue light on a NCA car which was being used privately at the time and not for work reasons.

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       Ms Holland joined the NCA five years ago after 28 years with Merseyside Police.

       The mum-of-one has been credited with helping to transform the agency’s fortunes and turn the tide in the war on serious organised crime.

       She led the Operation Venetic response to cracking EncroChat phones which has led to thousands of crime barons being rounded up.

       As well as leading investigations, she heads up the country’s law enforcement response to county lines drug running.

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       She also has overall responsibility for all firearms operations and strategy in the UK.

       The IOPC confirmed in a statement: “The NCA has suspended both officers from duty pending the investigation.

       “It would not be appropriate for us to comment further while that investigation is ongoing.”

       Ms Holland was awarded the Queen’s Police Medal in the 2019 New Year’s Honours.

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       A former colleague said: “She is a brilliant officer.”

       The NCA declined to comment about the investigation.