Monsignor Patrick Chauvet said the fire-damaged Notre Dame is so fragile that “there is maybe a 50% chance that it will be saved."
The cathedral was severely damaged in a devastating fire in April.
The French culture minister is more concerned with quality over speed.
The full extent of the destruction to Notre-Dame Cathedral in Paris was laid bare on Wednesday as French culture minister Franck Riester visited to look at renovation efforts.
French authorities have no grounds to believe that the fire that wrecked Paris' Notre-Dame Cathedral in April was the result of criminal activity, although they are looking into the possibility of negligence, said the Paris prosecutor's office.
Two months after a devastating fire destroyed the cathedral's spire and roof, the Archbishop of Paris, Michel Aupetit, held mass for the anniversary of the cathedral's dedication as a place of prayer.
Architect Philippe Villeneuve has been overseeing the cathedral's renovations since 2013. He disagrees with Macron's idea of a "creative reconstruction".
The 12th century old cathedral could be potentially modernised into an energy efficient solar project.
As the French came to terms with the damage inflicted on Notre Dame by a recent fire, architects and graphic designers have been sharing their ideas for the reconstruction of the iconic cathedral.
France President Emmanuel Macron has said he wants the structure renovated in five years. But opposition MPs have been critical, saying it is unrealistic and motivated by the fact Paris is hosting the Olympic Games in 2024.
Some ideas are serious, some are crazy, but architects are responding to the challenge of an international design competition to rebuild Notre-Dame de Paris.
France is in a hurry to rebuild the world-famous Notre-Dame cathedral. The young people of the Compagnons du Devoir, hope to be among the chosen ones for the prestigious task of restoring their centennial roof.
The roof renovation company repairing Notre Dame's roof confirmed to Euronews their workers smoked on top of the roof but denied it being at the origin of the fire that ravaged the gothic monument a week ago.
Experts from around the world have been called upon to help with the reconstruction and restoration of the fire-ravaged Notre-Dame cathedral in Paris
French President Emmanuel Macron has set the ambitious target of rebuilding Notre-Dame within the next 5 years, but is this achievable?
The choir at Notre Dame Cathedral are defiant despite last week's fire.
Interior Minister Christophe Castaner said on Friday that "the rioters have visibly not been moved by what happened at Notre-Dame."
Emotions were intense at this year's Way of the Cross ceremony as religious rituals took place on Good Friday in the area around Notre-Dame cathedral
Three churches destroyed by fires in the United States have seen a spike in donations following the flooding of funds to Notre-Dame Cathedral.
For Good Friday, the Catholic community in Paris has congregated around Notre Dame to perform the 'Way of the Cross' recounting Christ's passion.
In our special report ‘Saving Notre-Dame’, we followed as events unfolded in Paris. Euronews charts the blaze as 800 years of history fall to ashes with eyewitness accounts, field reporting and expert insights.
In this edition we see how Europe was united in emotion over Notre Dame and in love as we meet EU couples in Verona.
French cartoonist Alexis Delahaye has suggested the money should be put towards conserving the planet.
A unique 3D model of the Notre Dame cathedral created by a late art history professor could help its reconstruction efforts.
The monument was severely damaged in a fire on Monday evening.
Drone footage shows for the first time the aerial view of damage to the roof.