Questions linger as crews find disaster's first debris

Egyptian military says EgyptAir Flight 804 debris found

CAIRO -- Search crews found floating human remains, luggage and seats from the doomed EgyptAir jetliner Friday but face a potentially more complex task in locating bigger pieces of wreckage and the black boxes vital to determining why the plane plunged into the Mediterranean.

EgyptAir crash renews focus on airport security

Looking for clues to whether terrorists brought down EgyptAir Flight 804 and its 66 people aboard, investigators pored over the passenger list and questioned ground crew members at Charles de Gaulle Airport in Paris, where the plane took off.

The Airbus A320 had been cruising normally in clear skies on a nighttime flight to Cairo early Thursday when it suddenly lurched left, then right, spun all the way around and plummeted 38,000 feet into the sea, never issuing a distress signal.

In Egypt, home to 30 of the victims, grieving families and friends wondered if their loved ones would ever be recovered. Many gathered in mosques for Salat al-Ghaib, or "prayers for the absent," held for the dead whose bodies have not been found.

What would help determine whether EgyptAir crash was terrorism?

"This is what is ripping our hearts apart, when we think about it. When someone you love so much dies, at least you have a body to bury. But we have no body until now," said Sherif al-Metanawi, a childhood friend of the pilot, Mohammed Shoukair.

Egyptian authorities said they believe terrorism is a more likely explanation than equipment failure, and some aviation experts have said the erratic flight suggests a bomb blast or a struggle in the cockpit. But so far no hard evidence has emerged.

CBS News senior security contributor Michael Morell, a former deputy director of the CIA, said there are multiple layers of the investigation that could help determine whether the crash was terrorism.

"Is there anybody on that flight with a link to a terrorist organization, number one. And number two, are there any conversations that are going on right now within terrorist organizations - non-public conversations - where they're congratulating each other. That's one of the ways you see who is responsible," Morell said on "CBS This Morning" Friday. "So that's on the intelligence side. On the investigatory side, it's looking at the wreckage, debris, bomb residue, that black box that could tell you what brought down the aircraft."

Could a terrorist attack have brought down EgyptAir jet?

No militant group has claimed to have brought down the aircraft. That is a contrast to the downing of a Russian jet in October over Egypt's Sinai Peninsula that killed 224 people. In that case, the Sinai branch of the Islamic State of Iraq and Syria, or ISIS, issued a claim of responsibility within hours. On Friday, ISIS issued a statement on clashes with the Egyptian military in Sinai, but nothing about the plane.

Three European security officials said the passenger manifest for Flight 804 contained no names on terrorism watch lists. The officials spoke to The Associated Press on condition of anonymity because they were not authorized to discuss the investigation. The manifest was leaked online and has not been verified by the airline.

Further checks are being conducted on relatives of the passengers.

French aviation investigators have begun to check and question all baggage handlers, maintenance workers, gate agents and other ground crew members at De Gaulle Airport who had a direct or indirect link to the plane before it took off, according to a French judicial official. The official was not authorized to discuss the investigation and spoke to the AP on condition of anonymity.

Why don't planes stream their flight data in real time?

Experts said answers will come only with an examination of the wreckage and the plane's cockpit voice and flight data recorders, commonly known as black boxes.

A French Navy patrol boat left the port of Toulon on Friday with sonar that can pick up the underwater "pings" emitted by the recorders. But it will take the vessel two or three days to reach the search zone.

Ships and planes from Egypt, Greece, Britain, France, the United States and Cyprus have taken part in the search for what's left of Flight 804, scouring the waters roughly halfway between the Greek island of Crete and the Egyptian coast.

CBS News national security correspondent David Martin reports a U.S. Navy P-3 Orion search aircraft has made three searches from Naval Air Station Sigonella in Sicily, Italy. The plane can operate over the search area for three hours after the three-hour trip from the airbase.

Did terrorism cause EgyptAir plane crash?

The waters in the area are 8,000 to 10,000 feet deep, and the pings can be detected up to a depth of 20,000 feet.

"Its batteries allow it to transmit for 30 days," Athanassios Binis, head of Greece's aviation accident investigation agency, said on state TV. Once a vessel detects the recorders, "the next step would be to pinpoint it and go down with special equipment to recover it."

Egyptian searchers found the first debris from the crash around 180 miles north of the Egyptian coastal city of Alexandria. Civil Aviation Minister Sherif Fathi informed relatives there were no survivors, the Al-Masry Al-Youm newspaper said.

EgyptAir said luggage and seats were found, as well as body parts.

Greece's defense minister had said that Egyptian forces told their Greek counterparts that they saw a body part in the water along with two seats and suitcases. Egypt's civil aviation agency later said human remains had been recovered, but it unusually cited the information to an anonymous source at the airline.

The crash has struck a demoralizing blow to Egypt. The economy has been gutted by years of turmoil since the 2011 overthrow of President Hosni Mubarak, and the Russian plane crash caused a new plunge in tourism, one of the country's main money makers.

Amid fears that a security lapse in Paris may have led to the tragedy, France's junior minister for transport, Alain Vidalies, defended security at De Gaulle Airport, saying staff badges are revoked if there is the slightest doubt.

French Foreign Minister Jean-Marc Ayrault asserted on French television that there is "absolutely no indication" of what caused the crash.

The pilot, Shoukair, was experienced, with 6,275 flying hours, and co-pilot Ahmed Assem had clocked 2,101, officials said.

A terror analyst who is in contact with members of ISIS and other jihadist groups said there have been "no credible or even semi-credible" claims of responsibility for the tragedy.

Shiraz Maher at the International Center for the Study of Radicalisation in London said ISIS issued a 20-minute video Thursday about its plans to conquer India.

"If they had been involved in the crash," he said, "it would be very odd for them to have sent that video rather than boasting of the crash."

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