Police in the central province of Quang Nam arrested a poacher on Sunday for killing 13 rare primates in a forest.
Nguyen Van Hai, 43, was apprehended while transporting the dried carcasses of 13 red-shanked douc langurs out of a forest in Tu Commune, Dong Giang District, to sell in China.
Hai confessed to police he shot the langurs dead and removed their viscera before drying them in order to transport them more easily.
The red-shanked douc (Pygathrix nemaeus) is a species of Old World monkey, among the most colorful of all primates.
Listed as "endangered" by the International Union for Conservation of Nature (IUCN), it is also protected under Vietnamese law which bans hunting and trading the animal.
In the past, the red-shanked douc could be found in many mountainous areas of Quang Nam but the population of this species has shrunk dramatically due to fierce poaching.
According to the IUCN, poachers pose the number one threat to this species. The animals are used for traditional medicine and the international pet trade, especially between Laos, Vietnam and Thailand.