Police in the central Vietnamese province of Quang Binh said local residents had discovered early Thursday three dead men inside a badly damaged truck that likely plunged off a cliff on National Highway 15.
The three men were identified as Hoang Lien Son, Tran Van Hien, both 45 and Vo Van Man, 48, of Ha Tinh Province.
The truck, which was traveling in Tuyen Hoa District when the accident occurred, was not carrying any cargo, the police said.
It was found lying beneath a cliff 30-35 meters away from the highway.
The police are investigating.