No, I've been wondering about that too.
There was no mention of drugs or dope by the prosecutor last night and I was surprised that no one from the media asked about it.
Although most of them seemed focused on questions that would drive their political and racist agendas.
Autopsy & toxicology
Probably by now you have read down-thread and saw the toxicology report link.
Looks like he was under the influence of marijuana at the time of the incident.