Police in Ho Chi Minh City's Cu Chi District on Monday arrested a 14-year-old boy who threw handmade gasoline bombs into six schoolgirls, two of whom were seriously burned, newswire Dan Tri reported.
Tran Ngoc Sang, a ninth grader of Trung An Secondary School, is being detained while further investigations are under way.
On Monday, Sang reportedly ignited two glass bottles, filled with gasoline and had their necks covered with bits of cotton, and threw them at Tran Thi Thanh Truc, also a ninth grader of another class, while Truc was sitting in her classroom.
The bottles missed Truc and fell into a group of six schoolgirls. As soon as the bottles broke, flames flared up.
Two schoolgirls Yen Nhi and Thuy Tien were rushed to hospital to be treated for burns.
Sang fled the scene, but was later caught by some teachers, who took him to the police station.
Initial investigations showed Sang made friends with Truc three months ago, and they usually sent text messages to each other.
They picked up a fight through text messaging, and Sang fostered a plan to take revenge on Truc.
Sang learned how to make the gasoline bombs via the Internet, police said.