Anheuser-Busch heir sued over girlfriend's death

The family of a 27-year-old model who died last year of what authorities say was a drug overdose at the mansion of August Busch IV is suing the Anheuser-Busch heir, accusing her former boyfriend of carelessness and negligence.

The wrongful-death lawsuit filed Thursday in St. Louis County on behalf of Adrienne Martin's surviving 8-year-old son seeks unspecified damages.

Authorities have said Martin had cocaine and the prescription painkiller oxycodone in her system when she died last December at the St. Louis-area home. An autopsy identified an oxycodone overdose as Martin's cause of death, but a prosecutor said she had taken lethal levels of both drugs.

Prosecutors said in February that no criminal charges would be filed against Busch.

Busch's attorney says his client denies any liability in Martin's death.