Ribald U.S. radio host Howard Stern, said on Tuesday CBS chief Les Moonves, is pursuing a personal vendetta against him because the network's radio profits have plunged since Howard's left to join satellite radio.

"I'm offended. I really do think this is a personal vendetta. Les has had it in for me for a long time. I don't deserve it," Stern told a news conference.

The New York Post reported there suing Stern for $500 million.