Read, comprehend, write.
In that sequence.
Sorry for being a bit rude but since you started to flame others I couldn't resist.
Nowhere was it stated that it was a suicide. But the locked cabin door potentially prevented the Captain (who apparently was not in the cokpit while the Co became unconscious) or any still conscious cabin crew to (re-) enter cockpit and take action or assist the Co- pilot.
henra
I suggest you read up on the Helios Flight 522 crash before posting, preferably by "Read, comprehend, write.In that sequence"
Both pilots & the steward ware in the cockpit before it crashed!