Boris Johnson has reportedly given evidence to an ongoing inquiry into allegations of bullying against Dominic Raab, who is currently serving as the deputy prime minister and justice secretary.
Mr Raab has been accused of bullying several civil servants who worked under him, with a formal complaints investigation ongoing.
While Mr Raab maintains his innocence, he has pledged to resign from government if the allegations are found to be true.
Boris Johnson, the former prime minister, has been revealed as one of the witnesses in the ongoing investigation into bullying allegations against Dominic Raab, who is currently serving as the deputy prime minister and justice secretary.
Mr Raab has denied the allegations made against him by over 20 civil servants, stating that he was simply setting high standards.
The independent lawyer Adam Tolley KC is spearheading the investigation, which is based on eight formal complaints.
The news has sparked a debate over the unusual involvement of a former prime minister in such an inquiry.