70 Paris airport workers were stripped of security clearances due to 'worrying behavior' prior to the EgyptAir crash

Airport security in the wake of EgyptAir crash

It is still not known what caused the crash of EgyptAir flight MS804, which disappeared over the Mediterranean last week, taking with it all 66 people aboard.

No theory has yet been ruled out.

But because terrorists have targeted passenger jets before, French security officials at Roissy/Charles de Gaulle airport in Paris — where the flight originated — are looking at security camera footage of workers at the airport before the plane took off.

Charles de Gaulle has had problems with workers in the past, stripping about 70 people of their security clearances after the November 2015 attacks in Paris, according to The Guardian.

RELATED: International security responses following Brussels attacks

5 PHOTOS
Brussels Attacks: International security response
See Gallery
70 Paris airport workers were stripped of security clearances due to 'worrying behavior' prior to the EgyptAir crash
PARIS, FRANCE - MARCH 22: (FRANCE OUT) French police officers patrol at the Trocadero Plaza next to the Eiffel Tower on March 22, 2106 in Paris, France. Since this morning 400 policemen and gendarmes have been deployed to increase the security in airports, stations and public transportation around Paris and its region after the terrorist attacks in Brussels today. (Photo by Christophe Morin/IP3/Getty Images)
PARIS, FRANCE - MARCH 22: (FRANCE OUT) French police officers patrol at the Trocadero Plaza next to the Eiffel Tower on March 22, 2106 in Paris, France. Since this morning 400 policemen and gendarmes have been deployed to increase the security in airports, stations and public transportation around Paris and its region after the terrorist attacks in Brussels today. (Photo by Christophe Morin/IP3/Getty Images)
PARIS, March 22, 2016-- Police officers patrol at Charles de Gaulle airport in Paris, capital of France, March 22, 2016. Security has been beefed up in France with 1,600 police officers deployed at airports, railway stations and bus stations since the attacks on Brussels Tuesday. (Xinhua/Theo Duval via Getty Images)
BUDAPEST, HUNGARY - MARCH 22: Hungarian counter-terrorism agents secure the Liszt Ferenc International Airport in Budapest, Hungary on March 22, 2016 following high level security alert following the morning explosions in Brussels. At least 34 people were killed and more than 100 injured in multiple explosions at an airport and metro station in Brussels on today's morning. (Photo by Arpad Kurucz/Anadolu Agency/Getty Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

The mystery investigators now want to clear up is whether a bomb was placed on the EgyptAir plane at Charles de Gaulle before it left France. The jet had also most recently been on trips to Asmara, in Eritrea, and Tunis, in Tunisia, before it arrived in Paris.

France has been through a series of heightened security alerts ever since the Charlie Hebdo and Bataclan shooting attacks in 2015, so security at Paris airports should have been super-tough.The Local reported:

"We are still not sure of [the cause], but the incident has triggered a series of checks," said an expert cited in Le Figaro.

A senior official at [Charles de Gaulle] said France's air police (GTA) would be reviewing video footage and other information relating to MS 804, the French daily said.

The official added: "Investigators will inevitably be interested in the ground crew... numerous salafists have been detected in the past, among those workers who had access to areas for loading and unloading aircraft. Sometimes there is complicity in airports. We must not hide that fact."

That bit about "numerous salafists" refers to the fact that the airport stripped about 70 workers of their security clearances after the November attacks, according to The Guardian, because of "worrying behaviour." The Local reported in December 2015:

Secure-zone clearance has been withdrawn for nearly 70 people working at two Paris airports following the November 13 terror attacks on the French capital, the boss of the airports company said on Sunday.

Augustin de Romanet, chief executive officer of Aeroports de Paris (ADP), said the prefecture -- the representative of the state -- which issues the badges had carried out a screening after the attacks on Paris, in which 130 people were killed and 350 injured.

"Nearly 70 red badges were withdrawn after the attacks, mainly for cases of radicalisation," he said in an interview with French media.

Around 85,000 people have security clearances at Paris's two airports, and they work for hundreds of sub-contractors, The Local reported:

"To be issued with a red badge, you have to be cleared by police, and if you work for a company that carries out security checks of in-flight luggage, you need three police checks," said Augustin de Romanet, chief executive officer of Aeroports de Paris (ADP).

A very small number of EgyptAir staff have been identified as security risks in the past.

An EgyptAir employee at the Sharm el-Sheikh airport in Egypt was arrested in January 2016 in connection with the bomb that was smuggled aboard the Russian MetroJet flight that blew up, killing 224 people.

Two years ago, someone wrote "We will bring this plane down" in Arabic on the underside of the same EgyptAir jetliner that crashed last week, in Cairo, according to The New York Times. The airline's security officials believe that was a random political act linked to Egypt's domestic troubles at the time.

And an EgyptAir pilot deliberately flew Flight 990 from New York into the Atlantic ocean, killing 217 people, in 1990.

In the latest search news, the Egyptian government is bringing in two companies that specialise in deep sea searches to help their hunt for the black box recorder for flight MS804.

Read Full Story

Sign up for Breaking News by AOL to get the latest breaking news alerts and updates delivered straight to your inbox.

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.