I was involved in a serious accident on May 23 2015. A friend passed away and I was left with serious head injuries. What I remembered of the accident or before the accident is that the airbag deployed while I was driving and after that I don't remember anything. I woke up in hospital ICU and learned there that my friend that traveled with me passed away. What do I do next to report this and where. I need to make 100% sure this is what happened as the car just left the road and rolled with nose onto roof and again onto wheels.