San Francisco (CNN Business) US prosecutors have obtained evidence indicating that Jeff Bezos' girlfriend, Lauren Sanchez, sent her brother text messages that were later published in the National Enquirer in its story about their affair, according to the Wall Street Journal.

The texts sent from Sanchez's phone to her brother Michael Sanchez in 2018 include a flirtatious message from Bezos and a shirtless photo of him, the Journal reported, citing people familiar with the matter.

The text messages are part of evidence gathered by federal prosecutors in Manhattan as they investigate whether the National Enquirer's publisher, American Media Inc. (AMI), tried to extort Bezos.

While prosecutors continue to investigate, no one, including Lauren and Michael Sanchez, has been charged with a crime.

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