One of the sources described Carlson as "furious" with network executives, especially the public relations team, "for not backing him up." "Tensions are sky high," the person said. Another source pointed out that Carlson has "always had tension with" management, but said right now he's "extra pissed."... In a text to a CNN reporter Sunday night, Carlson called the allegation that he is angry with Fox executives "absurd." "I'm not mad at anyone at Fox," he said. "If I was, I'd say so. I'm mad at you for lying relentlessly. What a loathsome person you are. Please print that."... Fox pointedly has not covered his claims on its newscasts, even though such an intrusion would normally be a significant news story. Fox has not shown any outward signs of investigating Carlson's claims, either.