MI5 has been urged to probe where the footage of Matt Hancock in an apparent embrace with his adviser came from amid fears of a Whitehall security breach.
The Health Secretary has been accused of having an affair after The Sun published pictures of the married Cabinet minister appearing to kiss Gina Coladangelo, who the newspaper said was hired by Mr Hancock last year.
The images, which appear to be captured from CCTV footage, were taken on May 6 from the headquarters of the Department of Health and Social Care.
The publication of the images has led to calls for a leak inquiry, with the Henry Jackson Society think tank saying this morning that 'MI5 must investigate' because it 'suggests a security-breach' may have taken place.
MI5 has been urged to probe where the footage of Matt Hancock in an apparent embrace with his adviser came from amid fears of a Whitehall security breach
Alan Mendoza, the executive director of the think tank, called for a probe to ascertain the origin of the images as he suggested they could have come from a 'bug'.
He said: 'For reasons of national security, it should be impossible for a bug to be placed anywhere near such a facility.
'The Government must urgently explain how such a glaring security-breach occurred & MI5 must immediately probe the circumstances.
'All other Ministerial offices will now need sweeping to see what other listening & recording devices are snooping on Ministers.
'Steps should also be taken to determine if this incident was conducted by a disgruntled civil servant or – given its sophistication & seriousness – agents of a hostile state.'
The Sun reported that Mr Hancock hired Ms Coladangelo as an unpaid adviser on a six-month contract in March last year, before appointing her as a non-executive director at the department.
Mr Hancock, who is said to have met Ms Coladangelo at university, has been married to his wife Martha for 15 years and they have three children together.
Ms Coladangelo is the marketing and communications director at Oliver Bonas, a British retailer founded by her husband Oliver Tress.
Transport Secretary Grant Shapps said on Friday morning that he would not be commenting on the 'entirely personal' matter following the reports about his Cabinet colleague.