According to the authorities in Dubai, he died of natural causes, probably liver failure. He has had health issues in the past year as of his last trip to Azerbaijan and he might have traveled prematurely. For various reasons, his funeral is being held in Dubai today.
Because of what Jam told me in private about his health, I know there is more to the story. Hard to know for sure what is the truth because the authorities and his family might not reveal other causes. What I do know is that Jam was really looking forward to this trip and starting his new life, so it was likely something unforeseen. His cousin told me that suicide is not suspected.