Amazon founder and chief executive officer Jeff Bezos has alleged American Media Inc., which owns the National Enquirer, attempted to extort him by threatening to release personal photos unless he dropped an investigation of the company.

Bezos published an alleged exchange with AMI’s deputy general counsel Jon Fine in a blog post on Medium on Thursday afternoon. Fine previously worked at Amazon, spending nine years at the company, including nearly than two years as associate general counsel, according to his LinkedIn profile.