Jeff Bezos' private security guard has admitted questioning Lauren Sanchez's Trump-loving brother as part of his investigation to find out who leaked details of their affair to the press.

Gavin de Becker, Bezos' long-time employee, spoke with Michael Sanchez this week as part of the ongoing probe that Bezos is funding himself to find out how his romance with Lauren was exposed.

'Michael Sanchez has been among the people we’ve been speaking with and looking at,' de Beck told The Daily Beast on Thursday.

According to three people close to the investigation, Michael believes that members of the 'deep state' used the NSA to harvest the text messages from either his sister's phone or the Amazon billionaire's.

It is not clear why he thinks that or if there is any suspicion that he had a role in exposing the affair. He was pictured with his sister and their mother at Amazon HQ in June this year.

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Jeff Bezos' private security guard questioned Lauren Sanchez's brother Michael, right, to ask whether it was him who leaked their private and explicit text messages earlier this month

Family field trip: Michael is pictured with his sister and their mother at Amazon's HQ in Seattle in June last year - six months before his sister's affair with the founder became public

He did not immediately respond to DailyMail.com's inquiries on Thursday afternoon.

Michael is close with his sister and spent the holidays with her, his husband Casey and the rest of their family.

Like Lauren's estranged husband Patrick Whitesell, Michael is a Hollywood talent manager who has close friendships with key players in Trump's inner circle including the recently indicted Roger Stone and former foreign policy adviser Carter Page.

In 2016, he described himself in a letter to a newspaper as a 'gay man, a Hispanic, a West Hollywood homeowner and strong supporter of Trump.'

Stone made mention of Sanchez during an interview with conservative commentator and conspiracy theorist Alex Jones this week not long after being released on bail.

He was arrested as part of Special Prosecutor Robert Mueller's probe into Trump's Russia ties last week.

Stone said: 'The Daily Beast is about to publish a story claiming that I, working with President Trump and the NSA, hacked the cell phone of Lauren Sanchez and that we gave the information to the National Enquirer.

Sanchez, who is a Hollywood talent manager like his brother-in-law, is a Trump fan who is friends with some of the president's allies including former adviser Carter Page (pictured with him and conservative TV host Scottie Nell Hughes) and the recently indicted Roger Stone. Trump and Bezos are adversaries and it has been reported that Bezos believes his affair was exposed by people who were politically motivated

BEZOS' SEXTS TO SANCHEZ 'I love you, alive girl. I will show you with my body, and my lips and my eyes, very soon.' 'I want to smell you, I want to breathe you in. I want to hold you tight.… I want to kiss your lips…. I love you. I am in love with you.' 'I miss you. I want to kiss you right now and tuck you in slowly and gently. And maybe in the morning wake you up and not be quite so gentle with you.' 'Your energy and ideas and competence and SPIRIT turn me on. You make me better. You're meant for me.' 'I am so full of love for you. My heart is growing just so it can have room for you. It's bigger than it's ever been and still swelling.' 'I want to hold you tight.… I want to kiss your lips…. I love you. I am in love with you.' 'You know what I want? I want to get a little drunk with you tonight. Not falling down. Just a little drunk. I want to talk to you and plan with you. Listen and laugh … I basically WANT TO BE WITH YOU!!! Then I want to fall asleep with you and wake up tomorrow and read the paper with you and have coffee with you Advertisement

'This is a conspiracy that allegedly involves Michael Sanchez, Lauren Sanchez's brother, a very hot Hollywood manager that happens to be a friend of mine.'

The Daily Beast denied pursuing the angle that the phones had been hacked.

Bezos, who is yet to comment publicly about his new relationship, is said to be hell-bent on discovering who obtained the explicit text messages he sent Sanchez eight months before he announced his divorce.

In one, he reportedly told the 49-year-old: 'I want to smell you, I want to breathe you in. I want to hold you tight.… I want to kiss your lips…. I love you. I am in love with you.'

Others are more graphic, including one where he is said to have told the former Extra and Fox host: 'I miss you. I want to kiss you right now and tuck you in slowly and gently.

'And maybe in the morning wake you up and not be quite so gentle with you.'

In another, he allegedly said: 'Your energy and ideas and competence and SPIRIT turn me on.

'You make me better. You're meant for me.'

Another is said to have read: 'I am so full of love for you. My heart is growing just so it can have room for you.

'It's bigger than it's ever been and still swelling.'

Other reported remarks include: 'I want to hold you tight.… I want to kiss your lips…. I love you. I am in love with you,' and 'You know what I want? I want to get a little drunk with you tonight. Not falling down. Just a little drunk. I want to talk to you and plan with you. Listen and laugh … I basically WANT TO BE WITH YOU!!! Then I want to fall asleep with you and wake up tomorrow and read the paper with you and have coffee with you.'

Michael had a close relationship with his sister. Poking fun at her in one picture uploaded to social media, he captioned: 'Does this picture make my boobs look big?'

Michael, pictured with his husband Casey, has not commented about his sister's romance or being interviewed by her new boyfriend's security

He also sent her photographs of himself shirtless and one picture of his genitalia.

It had been reported that Lauren, a former actress and TV personality, boasted to friends about them and sent them on which is how the National Enquirer obtained them.

Pecker and Trump's friendship goes back decades and involves AMI, the company which owns the Enquirer, paying Trump's alleged mistresses - Stormy Daniels and Karen McDougal - hush money to stop them from coming forward with their claims during the 2016 presidential campaign.

Trump has repeatedly launched attacks on Bezos, accusing him of using the Washington Post, which he owns, to criticize his administration.

Bezos personal security team is reportedly focusing on a theory that the messages were leaked by someone with ties to President Donald Trump (left), an outspoken critic of the billionaire who has been linked to the Enquirer through its chief executive David Pecker (right)

After the Enquirer expose, Trump took a swipe at the Amazon founder on Twitter, writing: 'So sorry to hear the news about Jeff Bozo being taken down by a competitor whose reporting, I understand, is far more accurate than the reporting in his lobbyist newspaper, the Amazon Washington Post.

'Hopefully the paper will soon be placed in better & more responsible hands!'

The Enquirer's investigation into the affair spanned four months and involved following the couple as they traversed the country on private planes and visited each other at their marital homes.

Bezos has said nothing publicly of it since it emerged, nor has Lauren.

It has been insinuated from both of their camps that they were separated from their spouses when they became romantically involved after nurturing a friendship for several years, but no one has confirmed that there was no infidelity on the record.