( CNN ) -- The December death of a 27-year-old woman at the Missouri home of beer tycoon August Busch IV was ruled an accident , a medical examiner said Wednesday . Adrienne Nicole Martin died of an oxycodone overdose , the St. Louis County Office of the Medical Examiner said in a statement . She was found dead December 19 at Busch 's Frontenac , Missouri , home , authorities said . The medical examiner 's office said that information , and its complete report , was forwarded to the law enforcement agencies investigating Martin 's death . Police responded to a call from the home about an unresponsive woman , authorities said . `` This girl is not waking up , '' Michael Jung , a home staff employee at the Busch estate , told the operator . `` Is she breathing '' ? the 911 operator asked Jung . `` We do n't know , '' Jung replied . `` It 's dark . I 'm going to get a light to see . '' The call ended after the operator told Jung an ambulance had been sent to the property . Martin had no apparent signs of trauma or other indications of cause of death , police said . Oxycodone is a narcotic pain medication . Busch 's lawyer , Art Margulis , described Martin as a friend of his client 's . `` There 's absolutely nothing here that would indicate that this occurred under any suspicious circumstances , '' Margulis said at the time . `` It 's a tragic death of a ... very nice young lady . '' Frontenac , a community of about 3,500 people , is 11 miles west of St. Louis . Martin was a model and aspiring art therapist , described as Native American on her page on iStudio.com , which says it serves `` the modeling , photography , and associated industries . '' In the About Me section of her page , she wrote that she had been in beauty pageants for years and `` would really like to do beer advertising . '' Busch , 46 , became chief executive officer of Anheuser-Busch in December 2006 , after years of working in the company 's brewing , operations and marking divisions . He was in charge in 2008 when Belgian brewer InBev engineered a $ 52 billion takeover of the then-St. Louis-based , company . With that move , the combined Anheuser-Busch InBev became the world 's largest brewer . That also largely ended the Busch family 's long legacy in brewing , namely heading the legendary eastern Missouri institution known for its Budweiser and other brands . The story started with Adolphus Busch , the company founder and August Busch IV 's great-grandfather . August Busch IV is the only representative of the family -- and its former namesake company -- on the Anheuser-Busch InBev board of directors .
Busch IV 's died of an oxycodone overdose , officials say . She was found dead December at August Martin St. Louis home . Busch IV 's was an aspiring model and art therapist .