An explosion, which was allegedly caused by a home-made explosive, injured one person at a forest rangers' station in the northern province of Thanh Hoa Thursday.
Initial information showed that the incident happened at around 6 a.m. when a group of unidentified assailants hurled a home-made bomb into the Ngoc Lac District ranger station.
Le Van Tien, a ranger, was injured, and some equipment was damaged, witnesses said.
A leader of Thanh Hoa Forest Rangers' Agency who wished to remain anonymous confirmed the incident with Thanh Nien, but refused to provide more related information.
Related agencies are investigating the case and hunting for suspects.