The February death of Dechert associate Cameron Schladenhauffen was an accident caused by a combination of several drugs, a medical examiner has found.

Schladenhauffen died from “acute intoxication by the combined effects of heroin, clonazepam, oxazepam, diazepam, alprazolam, temazepam and codeine,” a spokesperson for the New York Office of Chief Medical Examiner said in an email.

Clonazepam, oxazepam, diazepam, alprazolam and temazepam are all benzodiazepines, a class of prescription drugs that are sometimes prescribed for the treatment of anxiety or depression, as well as some other conditions. Codeine is a prescription pain medication.