UK Deputy Prime Minister Dominic Raab received a complaint over alleged inappropriate conduct and bullying of employees, Downing Street confirmed on Friday.

This marks the third complaint of its kind against Raab in recent weeks.

The complaint which was filed on November 23 pertains to Raab's tenure as Brexit Secretary in 2018.

"I can confirm that the prime minister has now asked the investigator to add a further formal complaint relating to conduct at the Department for Exiting the European Union and to establish the facts in line with the existing terms of reference," the spokesperson of UK Prime Minister Rishi Sunak was quoted by Sky News broadcaster as saying, adding that an investigation into the matter was ongoing.

Sky News said this new complaint could potentially tarnish Sunak's image who has openly expressed support for Raab and refused to dismiss him in light of recent scandals. 

Earlier in the month, Rishi Sunak appointed a top attorney to investigate two formal complaints on allegations of Dominic Raab's misconduct.

Critics have called for the investigation to be expanded to allow the slew of concerning claims about his Deputy's conduct.

Sunak had promised a government of “integrity and professionalism” and “compassion” when he was anointed with the votes of 200 MPs on October 25.

On November 14, the Daily Mirror reported Raab was so rude to his employees during his term as foreign minister that people were "scared to go into his office," according to Simon McDonald, a former Foreign Office senior civil servant.

On November 11, The Guardian reported that 15 employees of the Ministry of Justice were reportedly offered "respite or a route out" after Raab's reappointment over concerns that his behavior may cause them to suffer from trauma.

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