Four teenage girls were found dead Wednesday at an irrigation dam in Dak Nong Province in Vietnam's Central Highlands.
The girls, three of them 14 and one 15 years old, had asked their families to attend a birthday party celebration, before taking the provincial exam for excellent students, their families said.
The girls left for the lake with a birthday cake and did not return.
People found a coat, cell phone and shoes belonging to one of the girls next to the lake.
Their bodies were found at 8 pm, five hours after the girls left home.