Alex Omes, co-founder of Ultra Music Festival, died suddenly and under suspicious circumstances last January. His death just so happened to occur the same day that his trial against his former partner was set to begin. Omes was attempting to regain control of Ultra, which he co-founded, and tens of millions of dollars were at stake in this trial.

Omes had been missing for 12 hours. The morning of Monday, January 12, his brother Carlos came to his townhouse on Miami Beach to look for him. He found his brother and best friend dead in his bedroom, at age 42. Reports said they found cocaine in his room, but the cause of his death was unknown.

Now, the autopsy report from the Miami-Dade County medical examiner confirms that Omes tested positive for amphetamines, ketamine, cocaine, and GHB at the time of his death. Authorities have not yet given an official cause of death.

The day after his death, Ultra sent out an official email statement:

“The organizers of Ultra Music Festival extend their deepest condolences to the family of Alex Omes and are saddened by the news of his passing,” the press release read. “We will continue to remember and celebrate Alex for his love, passion, and contributions to the electronic dance music community.”

Omes’ brother Carlos is not yet convinced that his brother’s death was accidental. ”Foul play has not been ruled out,” he said, pointing to the fact that his death occurred immediately before the lawsuit against Ultra was heading to trial. That trial was rules in Ultra’s favor, though Carlos Omes is appealing that decision. The investigation in ongoing.

Ultra will still be held in Miami, March 18-20, 2016.