A phone call from a Fox News attorney to an associate of Tucker Carlson earlier this month spearheaded accusations of breach of contract the former top-rated host has lodged against his former employer, according to a report.

Axios reported that two weeks after Carlson was inexplicably ousted by the cable news giant, his high-powered attorney Bryan Freedman accused Fox News of breach of contract and “fraud” in a letter it described as “aggressive.”

The report claimed Freedman sent Fox the letter on May 9 and that he accused the company of breaking an agreement not to disparage Carlson after he was fired on April 24.

Soon after his ouster, private messages and videos from Carlson’s time at Fox News began to leak to left-wing outlets such as The New York Times and Media Matters.