A serving Metropolitan Police officer has been arrested on suspicion of perverting the course of justice after an undercover TV documentary.
The sergeant, based at Charing Cross Police Station, was detained by Directorate of Professional Standards on Thursday evening.
He has since been bailed and suspended from duty.
Scotland Yard said the allegation relates to an incident that took place at Charing Cross on October 2 - the day after BBC Panorama aired - and is linked to matters disclosed in the programme.
The force added: “The investigation is ongoing so it would not be appropriate to go into further detail at this time.”
The Independent Office for Police Conduct has been informed.
Met officers were secretly filmed by reporter Rory Bibb who got a job in the central London custody suite making racist and sexist comments, calling for immigrants to be shot and bragging about using violence against suspects.
Deputy Assistant Commissioner Andy Valentine, Professionalism, said: “We have been extremely clear we will be unrelenting in our approach to tackling issues at Charing Cross, and anywhere else across the Met.
“This fresh matter came to light through our internal reporting mechanisms and we continue to encourage and support all our officers and staff to report allegations of criminal and conduct behaviour so we can act swiftly.
“Professional standards officers immediately acted to make the arrest and the officer has been suspended from duty.
“We will not hesitate to take rapid action around any further allegations, as part of our deeper probe into corruption and ridding the Met of those who are not fit to serve the people of London.”
Nine serving officers, one ex-officer and a designated detention officer are all under investigation for gross misconduct, over allegations of use of excessive force and making discriminatory and misogynistic comments, and failing to report or challenge inappropriate behaviour.
The entire custody team at Charing Cross has been disbanded and moved elsewhere.
