@kbootb
1) No. It is inferred from the statement of the Greek minister of transport, but we have seen many such statements in the past from unqualified officials quickly changed or revoked.
2) Confirmed by both Greek ATC statement (can be taken as authentic) and also Egyptair. Also as seen from plenty of past events, FR24/Flightaware data are pretty reliable as long as real data are received, and in this case it does appear to be in agreement with official sources.
3) Fits perfectly, top of descent into Cairo along this route is usually just before the Egyptian shoreline, with 20-25 minutes left to landing. At their LKP they still had at least 35-40 minutes flight time left.