Alan Johnson's former police bodyguard, suspended over an alleged affair with the former shadow chancellor's wife, will be investigated over claims of a second relationship, with the politician's personal assistant.
Close protection officer Paul Rice guarded Mr Johnson when he was Home Secretary. He is thought to have also worked for Theresa May since she took over at the Home Office last May. An internal police inquiry will now look into both alleged relationships, it is understood.
The second was reportedly with a 50-year-old woman in Mr Johnson's Hull constituency.
Mr Johnson quit Labour's front bench on Thursday, forcing the Labour leader Ed Miliband to reshuffle his team.