The forestry department of Wangqing county in Jilin province confirmed this week it has captured photos of a wild Siberian tiger again with a far-infrared camera set up on Changbai Mountain.

Forestry department workers set the cameras up on the mountain in March and discovered the photos after recently retrieving the cameras.

Jiang Guangshun, expert of the World Wide Fund for Nature, helped confirm that the animals in the photos are the rare cats.

The photos taken in April are valuable for research purposes, he told China Daily on Thursday.

There are about 500 Siberian tigers in the world, mainly live the border region between China, Russia and the Democratic People's Republic of Korea.

China has intensified the preservation of forests and protection of wildlife in the past decade. The efforts have paid off, with the rare cats' population showing recovery.