UPDATE, MAY 31, 8:16 A.M.: Costa Mesa's police chief, Steve Staveley isn't entirely convinced by the conclusions being made from the coroner reports that Huy Pham had cocaine in his system at the time of his supposed suicide.
In an OC Register column, Staveley is quoted as saying, "Barbara [Venezia], I'm looking at the report right now. The drug found was something called Benzoylecgonine. I'm no doctor, but look at what it says on Wikipedia. Someone needs to get this information out for this man's family."
According to Wikipedia, Benzoylecgonine "is used as the main pharmaceutical ingredient in the prescription drug Esterom, a topical solution used for the relief of muscle pain." The entry goes on to point out that it "consists of ecgonine benzoate, and is the primary metabolite of cocaine."
Staveley made the point to the Register that "trace amounts" could point to cocaine, but could be indicative of another drug.