The counter-terrorism expert also revealed that evil ISIS is recruiting and training Europeans “with the goal of sending them back to hit their countries of origin”.
Last November saw 130 people killed and 352 injured in a spate of barbaric attacks on Paris by Daesh terrorists - but the official has warned more is to come.
He said: “Unfortunately, I think 2015 was nothing.
“We are moving towards a European 9/11: simultaneous attacks on the same day in several countries, several places. A very coordinated thing. We know the terrorists are working on this.
“They have the necessary false documents, the mastery of the language, the sites, the weapons. We stop a lot of them, but it must be recognised that we are overwhelmed. Some will get through - some already have.”
Concerns were raised by the official about recently arrests terrorists returning to Syria and Iraq.
He added: “The profiles are changing. We are seeing ultra-radical guys return, very battle-hardened, who should have stayed over there.
”Before we mostly had guys returning who had made a mistake, who didn't realise that war can be painful. But now, we are seeing guys return who are sticking to their chosen path.”
Colonel Hubert Bonneau, head of the elite GIGN police, said French security forces are attempting to speed up response times to terrorist attacks.
“There will always be a delay for intervention forces that we have to reduce as much as possible.
“In the Bataclan, the killing of 90 people took 20 minutes. It stops when there is the opposition of security forces.”
It took police two-and-a-half hours to storm the concert hall as they tried to gather information on the layout of the building and position of the terrorists.
Bonnie added: “If we don't intervene as quickly as possible there will be more victims. That's the lesson to draw from the attacks of November 13, that will change our mode of intervention.
“We need to have surgical action, as forceful as possible and as quickly as possible.”
Former analyst for France’s DGSE intelligence service Yves Trotignon said Europe should be prepared for multiple terrorist attacks across big cities, Express reported.
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