PHOTO: Ari Wibowo/WWF-Indonesia

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Sumatran rhino seen last month for the first time in 40 years

Now conservationists say the female rhino has died

(CNN) —  

For the first time in 40 years, a species of rhino has been seen in Kalimantan, the Indonesia part of Borneo.

The female Sumatran rhino was caught in a pit trap last month – the first time in 40 years the species was seen in Kalimantan, the Indonesia part of Borneo.

Sumatran rhinos are one of only two species that exist in Indonesia.

PHOTO: Ari Wibowo/WWF-Indonesia

The WWF has suspected Sumatran rhinos were not necessarily extinct there when they discovered footprints and caught one on camera.

“Our hearts are saddened by this devastating news from Kalimantan,” the International Rhino Foundation said in a statement Tuesday.

The World Wildlife Fund has long suspected Sumatran rhinos were not necessarily extinct. In the past, conservationists have discovered footprints in the region and caught one on camera.

“We will now strengthen our efforts to protect this extraordinary species,” Efransjah Efransjah of World Wildlife Fund said after the animal was discovered.

The Sumatran rhino is critically endangered, with about 100 remaining, according to the International Rhino Foundation.

The rhino will soon be transferred to a protected forest a few hundred miles away.