The first carcasses were sighted on May 27, then helicopter searches found many more littering the Olifants River, the park's most polluted waterway.
While no dead fish or other animals were found, all of the dead crocodiles contained yellow-orange hardened fat in their tails - usually a sign of eating rotten fish.
"We are in unknown territory, and we certainly don't have the answers as to why these crocodiles seem to be dying, so we need to look at the problem closely and find a solution," Danie Pienaar, head of scientific services for the park, said in the statement.
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| ©Grant Shimmin |
| A healthy Nile crocodile lurking on the bank of the Olifants River, in South Africa's Kruger National Park. |
