A giant panda cub born one week ago at the National Zoo in Washington D.C. has died.
Panda keepers and volunteers heard a distress call from the unnamed cub’s mother, Mei Xiang, at 9:17 a.m., today, the zoo said in a statement.
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The zoo’s Panda Cam, which has for 18 years allowed people around the world to watch the bears in their habitat, was turned off. Veterinarians were able to safely retrieve the panda an hour later, according to the zoo.

CPR and other life-saving measures were attempted, however the cub failed to respond, zoo officials said.

The cause of death is still undetermined. Veterinarians said the cub was in “good body condition,” weighing in at just under 100 grams and that there were no visible signs of trauma or infection.

The unnamed cub was born last Sunday night and has not been seen by the public.