Ninh Thuan police are hunting for a group of timber poachers suspected of attacking a forest protection station and injuring five park rangers in the central province last week.
Nguyen Quoc Thai, deputy head of Bac Ai District Forest Protection Agency, said that a group of 11 park rangers on March 2 seized nine sacks of charcoal from timber poachers.
Later on the same day, a group attacked their station and injured five park rangers and a local man.
Bac Ai has more than 27,000 hectares of forest that are protected by 24 groups of park rangers.
In another case on the same day, a group of rangers at Bach Ma National Park in Thua Thien-Hue Province was attacked by timber poachers who were caught felling two protected trees.
Park rangers initially held a poacher while the others managed to escape.
However, they returned soon and assaulted the rangers with sticks and stones, seriously injuring several park rangers. One of them, 28-year-old Le Anh Tuan, was unconscious.
They also demanded the park rangers leave after deleting all pictures they took at the scene.
It was among nearly 20 cases of park rangers being attacked by timber poachers in the park since last November, according to the park director Huynh Van Keo.
Thua Thien-Hue police are seeking to file criminal charges against the poachers.