US | August Busch IV Woman Found Dead at Home of Ex Anheuser-Busch CEO 27-year-old Adrienne Martin died in home of August Busch IV on Sunday By Kate Seamons Posted Dec 24, 2010 6:13 AM CST Copied August Busch IV joins employees in toasting the 75th anniversary of the repeal of Prohibition for beer on Monday, April 7, 2008. (AP Photo/Anheuser-Busch, Whitney Curtis) Another potentially sticky situation involving a dead woman for former Anheuser-Busch CEO August Busch IV. Police received a 911 call Sunday afternoon about an "unresponsive person" at his suburban St. Louis home; 27-year-old Adrienne N. Martin was dead by the time they arrived. A St. Louis County forensic administrator said there were no signs of trauma or illness; the St. Louis Post-Dispatch quoted an unnamed law enforcement source as saying the case was being investigated as a possible overdose, reports the AP. An autopsy has been conducted but results could take four to six weeks. An attorney for Busch says there was "absolutely nothing suspicious" about Martin's death. "It was a tragic death of a young woman." In 1983, Busch, then a 20-year-old University of Arizona student, left a bar with a 22-year-old Michele Frederick. His black Corvette crashed and Frederick was killed. Busch was found hours later at his home. He suffered a fractured skull and claimed he had amnesia. After a seven-month investigation, authorities declined to press criminal charges, citing a lack of evidence. The 46-year-old was CEO at Anheuser-Busch from 2006 until the company was bought by InBev in 2008. Read These Next Hall of Famer Dave Parker dies Mark Zuckerberg's 'list' has Silicon Valley buzzing. That 'buy now, pay later' loan may soon hit your credit score. IAEA chief downplays damage to Iran nuclear sites. Report an error