Detectives investigating the awarding of PSNI vehicle contracts have arrested a member of staff.
The 54-year-old suspect was detained in Co Antrim on suspicion of misconduct in public office, the PSNI announced on Tuesday.
A number of arrests have been made as part of the inquiry and the chief constable of West Yorkshire Police was recently suspended pending an investigation by his former force in Northern Ireland.
A PSNI spokesman confirmed the latest development.
He said: “Detectives from serious crime branch investigating the awarding of a number of PSNI vehicle contracts have arrested a 54-year-old member of police staff in Co Antrim.
“He has been arrested on suspicion of misconduct in public office and has been taken to a police station in Belfast for questioning.”
The individual is a civilian employee, rather than a police officer.
He is the eighth individual to have been arrested as part of the ongoing probe into the vehicle contracts in Northern Ireland.
In June it was revealed that chief constable of West Yorkshire Police Mark Gilmore, who grew up in Belfast and spent most of his career in Northern Ireland, was suspended by West Yorkshire police and crime commissioner Mark Burns-Williamson.
The move was prompted by the PSNI investigation into the awarding of the vehicle contracts.
Seven men have been arrested by detectives working on the case and questioned on suspicion of offences including bribery, misconduct in public office and procuring misconduct in public office.
Mr Gilmore was not one of those detained and said he conducted himself with the honesty and integrity expected of someone in his position and had a 31-year unblemished professional record.
Retired PSNI assistant chief constable Duncan McCausland was arrested.
After he was released, pending a report being sent to prosecutors for assessment, Mr McCausland strenuously denied wrongdoing and stressed his determination to prove his innocence.
Files on all seven suspects are being prepared for submission to the Public Prosecution Service, which decides whether to press charges.
Detectives are also preparing a file on a man aged 49 following inquiries into bribery and misconduct in public office which were initiated by this investigation.
He voluntarily attended a police station in Belfast for interview last week.