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(Image: POLICE/GETTY)

The woman, named only as Sarah H, was detained during a police raid following the discovery of a car packed with gas canisters in central Paris.

Inside were at least six cylinders – although the tanks are not thought to have been connected to a detonator.

French authorities revealed planned attacked had been cooked up under supervision of ISIS commanders based in Syria.

But they also made the shocking revelation Sarah H. had been set to marry to two notorious French extremists.

(Image: SG)

She was was engaged to Larossi Abballa, who killed two police officials in Magnanville in June and filmed the aftermath on Facebook Live before dying in a police raid.

She was also betrothed to Adel Kermiche, who slit the throat of an elderly French priest during morning Mass, and died in July, Paris prosecutor Francois Molins added.

Sarah H was detained along with two other women over the failed terror plot.

Her current fiancee was also arrested on Thursday, Mr Molins said.

(Image: POLICE) (Image: TWITTER)

19-year-old Ines Madani allegedly stabbed a police officer with a knife and was shot in the leg Thursday evening in a raid south of Paris, police said.

Her father is alleged to have owned the car.

A man arrested Thursday also had ties to the dead Abballa, one of the officials said.

In total five women and two men have been arrested in connection with the busted terror plot.

(Image: GETTY)

Shouts of 'Allahu Akbar' can be heard on the dramatic video footage of the women's arrests.

Mr Molins said the suspects were guided by ISIScommanders in Syria.

"The terrorist organisation uses not only women, but young women, who get to know them and develop their plot from a distance," he told a press conference.

Interior minister Bernard Cazeneuve said: "These three women aged 39, 23 and 19 had been radicalised, were fanatics and were in all likelihood preparing an imminent, violent act."

French President Francois Hollande said: "A group has been destroyed, but there are others. Information we were able to get from our intelligence services allowed us to act before it was too late.”

Madani's father was detained and later released after reporting his daughter had gone missing with the Peugeot car.