Interesting reading....
Florida Sun Sentinel
[ATC] did not warn Zinn that he was flying into hazardous weather and allowed Zinn to fly closer to it, Torres said. "Compounding that breach of the duty of care, he then failed to provide any navigational assistance when the pilot requested," Torres wrote.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The pilot's continued flight into an area of known convective weather, resulting in a loss of aircraft control. Contributing factors were the failure of the FAA center controller to provide information on depicted severe weather to the pilot and the controller's delay in providing requested navigational assistance until it was too late to provide the pilot with effective assistance in avoiding severe weather.