The diver in question is my cousin. This was their second dive of the day and everything was fine. Contrary to reports. He was found on the bottom unresponsive, and pulled up from there. No one knows right now what went wrong but obviously something did. He was more than experienced to handle these dives and his gear was more than OK so speculation needs to stop and wait for the results of the police investigation.
Thank you for the information you've been able to provide. Although this is the Accidents and Incidents part of ScubaBoard and condolences are against the rules in this section, I'm going to offer them anyway, to you and all your family.
I'm guessing that you've come reading here partly because you too want answers and understanding as to what happened. My apologies if that isn't the case. However, if it is, and since you appear to be relatively new to ScubaBoard, I'll offer a strongly recommended word of advice that we frequently offer to all family members who come here hoping for answers:
Please don't keep reading this thread.
If you choose to, most of us will more than welcome and appreciate any information or insights you may be able to provide. But you've already gotten a flavour of how people here can often be undiplomatic, or intellectually less than rigorous in differentiating between facts, hypotheses, and valid points of discussions that may have been brought up by this tragedy but that actually have nothing to do with what happened. (Never mind what help 'the media' can be.)
Equally important, this is an accident investigation forum, and accident investigations are generally quite brutal. Many possibility go under the microscope, and since the laudable goal is to try to prevent future accidents, just about everything that could have gone wrong is analysed, whether or not it actually happened. Unfortunately, all this is often quite hard on anyone with a major emotional involvement. More than one discussion of 'what ifs' has unfortunately had to have been stopped because of this, even though there may have been the possibility of saving someone some grief in the future. It's not a situation anyone likes. So please, consider not causing yourself more pain by getting too involved in any such discussions.
Outside of ScubaBoard and the Internet, in the coming days you or other family members will probably continue to be looking for answers. A somewhat related piece of advice people here frequently offer is not to have too high hopes of getting useful information from any investigation by authorities such as police or the coroner. You're a diver, so at least you have some idea what's involved in diving in terms of knowledge and skills. Globally, there are only a few lucky jurisdictions with the knowledge, resources and interest to analyse diving accidents. The vast majority of the time, you get reports like "death by drowning" or "cardiac arrest", which isn't very satisfactory either to family and friends of the deceased, or to the community of divers concerned for the loss of one of their own. (Personally, I wonder whether either of those two causes should henceforth be regarded as professionally inadequate on the part of coroners for any diving fatality.) For your family's sake, if you don't get satisfactory answers, please realise you may have to push. And if you want or need help from a very knowledgeable pool of divers to help you interpret and figure things out, they're here. Even if they tend to have more than a few conversational rough sides you'd have to deal with.