A California prostitute charged with killing a Google executive with an overdose of heroin aboard his yacht pleaded guilty to involuntary manslaughter and administering drugs.

A high-priced prostitute accused of abandoning a Google executive on his yacht after injecting him up with a fatal dose of heroin never meant for the man to die because he was paying her well, a defence lawyer said today.

An alleged high-end prostitute accused of injecting heroin into a Google executive on his yacht in California and leaving him to die when he overdosed, has appeared in court on manslaughter and heroin charges.