A woman in Paris was looking for a man and a little girl she said she photographed shortly before the fire at Notre Dame Cathedral started.
Brooke Windsor said she snapped the photo of the stranger and the little girl, who she believes may be a father and daughter, about an hour before the fire was spotted, the BBC reported.
The photo, which was taken at 5:57 p.m. local time, had been retweeted more than 225,000 times by Thursday afternoon.
After taking the photo, Windsor, who is visiting Paris from Michigan, according to the BBC, walked to the Louvre and that's where she and her companions noticed smoke.
The structure of the cathedral survived the blaze, but officials said there are "some vulnerabilities," CNN reported.
Many relics and works of art were saved from the flames, including the Crown of Thorns, which is believed to be the crown placed on Jesus head, according to CNN.
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