A raid on suspected poachers turned up a dead endangered Sumatran tiger — along with four tiger fetuses preserved in a jar, Indonesian authorities announced Sunday.

Forestry officials made the shocking discovery as they arrested five people during raids in Riau province’s Pelalawan district after receiving a tip from villagers about the critically endangered animals.

Officials confiscated the four preserved fetuses and a piece of an adult tiger’s skin, officials said.

The five suspects — four men and a woman — included two people believed to have been acting as sellers, officials said.

Police are investigating whether it is part of an illegal wildlife animal-trading syndicate, according to Eduward Hutapea, a local Environment and Forestry Law Enforcement chief.

Sumatran tigers are the most critically endangered tiger subspecies on the International Union for Conservation of Nature’s red list. About 400 remain, down from 1,000 in the 1970s, because of forest destruction and poaching.

With Post wires