If he did this, and by what we know so far, that appears to be the case. A couple key factors that are true is that he did suffer from depression, and he was on a powerful Benzodiazepine known a Ativan. These are very powerful benzos, and a statement by his wife indicated he was slurring his words, and may have taken an extra dose. He may have been on other psychic meds as well and we'll probably never know.
Psychotropic drugs of this caliber can be very dangerous, especially when combined with others like opioids. Both physically and emotionally. Dr's of the legal nature are often all too quick to script these meds, as we read about these sad cases time and time again. But that's ok cause their Dr's and they know better.
RIP Chris, you WILL be dearly missed.