It will take a month to deliver a preliminary report into the deadly EgyptAir crash, the head of the investigation team told Egypt's Al-Ahram newspaper, according to a Reuters report.
Al-Ahram, a state-owned paper, cited Ayman al-Moqadem, the head of Egypt's Air Accidents Investigation unit, Reuters said.
The investigation unit separately released a statement that said it was examining data from air traffic control, crew documents and the Airbus A320 itself, including signals sent from the plane before it plunged into the Mediterranean Sea on Thursday, but that it was too soon to reach any conclusions, according to multiple reports.
"It is far too early to make judgments or decisions on a single source of information such as the ACARS messages, which are signals or indicators that may have different causes (and) thus require further analysis," the investigators' statement said, Reuters reported.
France's aviation accident investigation bureau confirmed on Saturday that before it crashed, EgyptAir Flight MS804 sent automated messages from its Aircraft Communications Addressing and Reporting System (ACARS) reporting that smoke was detected on the jet, reports said.
Also on Saturday, the Egyptian military released photographs of what it said was debris from the crashed flight that it had recovered from the sea. The photographs included an uninflated lifejacket, torn seat parts, pieces of the plane and passengers belongings.
Meanwhile, Dow Jones newswires reported that the Islamic State militant group had urged its followers to intensify attacks against Western targets, but did not take responsibility for downing MS804.
The group had been quick to claim that it had brought down a Russian holiday flight in Egypt's Sinai Province in October – a crash that killed all 224 people on board – although no definitive cause has yet been agreed by investigators.
There has so far been no claim of responsibility for the crash of the EgyptAir flight, which disappeared from radar screens in the early hours of Thursday shortly after entering Egyptian airspace.
The plane was carrying 56 passengers, three EgyptAir security staff and seven crew-members. Egypt said that its navy had found body parts as well as wreckage from the plane and passengers' luggage in the sea about 180 miles from the northern city of Alexandria.