A rare Sumatran rhinoceros has died just a month after being captured by Indonesian conservation experts on Borneo where only of a few of the animals survive.

Nyoman Iswarayoga, a spokesman for World Wildlife Fund Indonesia, says Wednesday that the female rhino, named Najaq, had a severe infection from wounds believed to have been inflicted by poaching traps.

Only an estimated 100 Sumatran rhinos remain, mostly in Sumatra, and nine are in captivity. The species is threatened with extinction by poaching for horns and destruction of its habitat by farmers, illegal loggers and palm oil plantation companies.

Najaq was captured five months after being identified by forest cameras. Conservation experts have sighted only two other Sumatran rhinos on Borneo but believe the population is larger.