A Prosecutor says no charges will likely be filed in the December death of a woman at the mansion of August Busch the fourth in the St. Louis area. Prosecuting Attorney Robert P. McCulloch says cocaine and oxycodone were found in Adrienne Martin’s bloodstream.

The St. Louis Post Dispatch reports the evidence shows she took the drugs voluntarily, so it may be difficult to charge Busch with manslaughter. The prosecutor says the Busch brewing family heir has refused to cooperate since his initial statement to police.