With reference to the report that the aircraft had sent a message about an electrical failure. There is nothing synister involved there.
All Airbus aircraft periodically send text messages back to the home maintenance base during a flight. These inflight messages regarding any systems faults or failures are collated and then printed out in the cockpit automatically after landing.
The engineering department will have received these messages while the aircraft was in flight, so that they can troubleshoot and fix the problem once the aircraft lands. This saves time and inevitably money for the company.
On nearly EVERY airbus flight there will be a report of some (usually very minor) fault reported to the company during a flight.
The cause of this accident will be known thoroughly upon full investigation.
In the meantime, there is a possibility, however slight, that these people may still be alive.