U.S. authorities have sought information from Dean Foods and Clorox in connection with an insider-trading investigation of billionaire investor Carl Icahn, the Wall Street Journal reported Monday, citing people familiar with the matter. Food and beverage company Dean Foods received a subpoena from criminal authorities in recent weeks ordering the company to produce information, the Journal said. In 2011, the Securities and Exchange Commission had contacted consumer products maker Clorox for information related to trading in the company's shares, the newspaper said. The Federal Bureau of Investigation and the SEC are probing the case, which also involves golfer Phil Mickelson and Las Vegas gambler William Walters, Reuters reported earlier this month. The investigators are looking into whether Mickelson and Walters may have traded illegally on private information provided by Icahn. None of the men has been charged, and there is no indication charges will be filed, the WSJ reported, adding that Icahn, Walters and Mickelson have denied any wrongdoing. Dean Foods said it is reviewing the matter. Clorox was not immediately available for comment to Reuters.