<p>She and her attorney are expected to appear in federal court in Manhattan around noon today.</p>
<p>Stewart, 61, is under investigation for selling 4,000 shares of biotechnology company ImClone shortly before the Food and Drug Administration rejected the company's application for approval for a drug for colon cancer, sending the company's stock plummeting.</p>
<p>Federal prosecutors in Manhattan and investigators at the Securities and Exchange Commission have been looking into whether Stewart had advance word of the news. Stewart is friends with ImClone founder Samuel Waksal, who is expected to be sentenced for criminal fraud on Tuesday.</p>