A woman in northern France has admitted killing her eight newborn babies but said her husband knew nothing about it, the prosecutor in the case has said.

Dominique Cottrez has been placed under investigation over the deaths, which happened between 1989 and 2006. Her husband has been freed without charge.

Mr Cottrez had initially faced investigation for allegedly concealing the bodies and not reporting crimes.
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* What is known about the case

Mrs Cottrez, 47, faces charges of the voluntary homicide of the babies.

Being placed under investigation is the first stage of criminal proceedings that can lead to charges.

The prosecutor had requested the charges of failing to report the killings and hiding the bodies against Mr Cottrez, but the prosecutor said the investigating magistrate in the case had ruled against this.
Wrapped in plastic

The remains were found in the village of Villers-au-Tertre, near the northern city of Lille, on Wednesday.
At the scene
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Christian Fraser
Christian Fraser BBC News, Villers-au-Tertre

Dominique Cottrez was house proud. Her garden is a picture: there are no clues here - save for the police tape on the windows - to the macabre secret she was hiding in the garage of her tiny cottage.

The prosecutor says she is now facing eight counts of murder and a possible life sentence.

Mrs Cottrez was an active member of the community, a familiar figure known to all as the doting grandmother.

But she had smothered the first of these eight children in 1989, the last in 2006.

She never wanted any more children, she told police and, even though she is a care assistant, she claims she was too fearful of doctors to ever request contraception.

Police with sniffer dogs searched two houses in the quiet commuter village after the new owners of a house called them following the discovery of remains in the garden.

The house belonged to the parents of the arrested woman.

Police then conducted searches in another house in the village - that of the arrested couple - where the bodies of more babies were found.

Mrs Cottrez said she was fully aware of her pregnancies, but that she did not want any more children and did not want to see a doctor for contraception, the prosecutor in the case said at a news conference.

"This is a case outside of the norms given the number of newborns," he added.

Mrs Cottrez said that after a first difficult birth because of her heavy weight, she did not want to see any more doctors. She was alone in her pregnancies and while giving birth, the prosecutor said.

The remains found in the first house were wrapped in plastic bags, while the other six bodies were found in the garage of the second house wrapped in hermetically sealed plastic bags, hidden under a variety of objects.

The births of the eight babies were said to have taken place between 1989 and 2006-07, the prosecutor said, although further tests will be able to determine the exact dates.

Mr Cottrez said he had never noticed his wife's pregnancies because of her heavy weight, and had no idea she had been getting rid of the babies at birth, the prosecutor said.
Daughters speak

The couple have two grown-up daughters and grandchildren.
Map of key locations in Villers au Tertre

The two unnamed daughters, aged 21 and 22, told regional newspaper La Voix du Nord that they could not understand what had happened.

The younger of the two said: "We never noticed anything. She had her moments of weariness, it's true, but she worked nearly 24 hours a day between her job as a home help and her housework."

The eldest recalled how her mother had helped at the birth of her son: "She was there at the delivery with me, she was the one who carried him and wrapped him... We both had tears in our eyes."
Multiple infanticides in France
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* 2010, Nord region: Dominique Cottrez confesses to killing eight of her babies
* 2010, Lower Normandy: Celine Lesage jailed for killing six of her babies
* 2003, Alsace: Remains of four babies found in bags in forest - at least three had same parentage; parents not found
* 1984, Limousin: Jean-Pierre Leymarie and his wife Rolande jailed for killing seven of their babies

Both daughters added that they hoped their mother would get psychological help. "She must feel relieved now that she has nothing left to hide," said one.

Mrs Cottrez is a care worker while Mr Cottrez works for a construction company and is a member of the local council.

"He's on his third term in office. He used to volunteer in the community. He's a respectable man," local mayor Patrick Mercier told reporters earlier on Thursday.

The BBC's Christian Fraser in Paris says France has had a string of cases in recent years involving the deaths of newborn babies.

In March, a mother confessed to killing six of her newborn children and hiding them in the cellar of her house in north-west France.

In 1984 a couple in Correze, central France, were jailed for killing seven of their newborn infants over a period of seven years.

In Germany in 2006, Sabine Hilschenz was sentenced to 15 years in prison for the manslaughter of eight of her newborn babies. A ninth baby also died, but too long ago to allow a prosecution