It's probably obvious but now official.... Based on technical findings from the wreckage and recordings of the black box: The accident investigation today disclosed that with 100% certainty the accident was caused by a technical malfunction of the super puma and that it's out of the question that any human error could have caused or contributed to the accident.
At this moment they don't want to discuss similarities with previus accidents, specificially the one previously mentioned from 2009.
EDIT: There was not recorded any "mayday" from the chopter, which means from one second to the next, all was ok, and then all he## broke loose instantly
No further details of this is yet disclosed.