Jeff Bezos is being sued for defamation by girlfriend Lauren Sanchez's brother after the Amazon founder accused him of leaking graphic nude photos and intimate texts exposing his affair to the National Enquirer.

Michael Sanchez, the brother of Bezos' girlfriend, filed a suit stating that the tycoon defamed him by falsely claiming that he was the source of the naked photos of Bezos that ended up in the hands of the Enquirer.

In January 2019, the Enquirer exposed Bezos' extramarital affair with Lauren, including quoting from text messages between the pair.

Bezos hired investigators, led by his longtime security chief Gavin de Becker, who accused Saudi Arabia of being behind the revelations.

Michael Sanchez (right), the brother of Bezos' girlfriend Lauren Sanchez (left), filed a suit stating that Jeff Bezos defamed him by falsely claiming that he was the source of the naked photos of Bezos that ended up in the hands of the Enquirer

In January 2019, the Enquirer exposed Bezos' (right) extramarital affair with Lauren (left), including quoting from text messages between the pair

Last week, the Wall Street Journal revealed that New York City prosecutors had obtained documents including a May 10, 2018 text message sent from Lauren's phone to Michael, containing intimate text messages she had exchanged with Bezos.

It also reported that Michael had received a $200,000 payment from the Enquirer later that year.

Michael denies he had anything to do with the exposé.

He is now suing Bezos and de Becker for unspecified damages 'in an amount appropriate to punish and make an example of defendants.'

Michael claims he suffered substantial harm as a result of Bezos' allegations including an FBI raid on his home in full view of his neighbors.

The suit states he was a 'dutiful brother and manager' to Lauren at the time of the leak and that, despite assisting with the investigation, he had been 'scapegoated'.

The Wall Street Journal revealed that New York City prosecutors had obtained documents including a May 10, 2018 text message sent from Lauren's phone to Michael (right), containing intimate text messages she had exchanged with Bezos (left). It also reported that Michael (right) had received a $200,000 payment from the Enquirer. Michael denies he had anything to do with the exposé

Michael (right) says he was a 'dutiful brother and manager' to Lauren (left) at the time of the leak and that, despite assisting with the investigation, he had been 'scapegoated'. He is now suing Bezos for unspecified damages

Included in the tabloid's exposé was a quote from the Bezos text message that the Journal says Lauren Sanchez had sent to her brother in May 2018

Lauren reiterated the allegations that her brother sold information to the Enquirer and described his lawsuit against Bezos as 'baseless and untrue', in a statement to TMZ.

'Michael is my older brother. He secretly provided my most personal information to the National Enquirer - a deep and unforgivable betrayal,' she said.

'My family is hurting over this new baseless and untrue lawsuit, and we truly hope my brother finds peace.'

The saga began when, in January 2019, the Enquirer published details of Bezos' affair with Lauren.

Bezos was at the time married to MacKenzie, with who he has four children.

He abruptly announced a separation from his wife of 26 years, and has been romantically linked with Sanchez ever since.

Bezos alleged that the Enquirer tried to extort him by threatening to publish nude pictures, and he hired investigators to explore whether his phone was hacked.

His Investigators, endorsed by U.N. officials, indicated that the Crown Prince of Saudi Arabia had sent malicious code in a WhatsApp message that compromised Bezos' cell phone and was the source of the Enquirer story.

Saudi Arabia denies hacking Bezos' phone.

The Enquirer then claimed that Michael was the source, as first reported by The Journal.

'In September of 2018, Michael Sanchez began providing all materials and information to our reporters,' a spokesman for American Media told the Journal.

The spokesman said that any suggestion that a third party, such as Saudi Arabia, 'was involved in or in any way influenced our reporting is false.'

Bezos, who was married, was having an affair with Sanchez. Bezos alleged that the Enquirer tried to extort him by threatening to publish nude pictures, and he hired investigators to explore whether his phone was hacked

Parts of the text messages between Lauren and Bezos

The Journal said it had reviewed the text messages as well as a $200,000 payment Michael received from the Enquirer under an October 2018 contract.

Included in the tabloid's bombshell article was a quote from a text message from Bezos that Lauren had sent to her brother in May 2018.

Another text message sent from her phone to her brother's on July 3, 2018 includes a photo of a shirtless Bezos, according to the Journal.

Michael denied the allegations and said in an emailed statement to The Journal: 'With spoon-fed lies and half-truths, Wall Street Journal keeps getting it wrong.'

Despite the ongoing drama, Bezos and Lauren have put on a united front.

The couple were spotted smiling together in New York City Monday, and appeared unfazed by the family rift.

They went to a Manhattan restaurant and then to Hudson Yards with her children, where they climbed the new public art installation the Vessel.

Amazon founder and CEO Jeff Bezos (right) is seen with his girlfriend, Lauren Sanchez (left), in New York City on Monday