A sleeper bus traveling along National Highway 1 in southern Vietnam burst into flames after crashing into embankments near Dong Nai, killing seven people and injuring five, in the early hours of Monday. The 24-seat bus, on a route from Hung Thinh Commune toward Bien Hoa and Ho Chi Minh City, crashed and continued moving before a second collision, after which flames engulfed the cabin; the driver urged passengers to evacuate, but many could not escape. Firefighters and rescue teams arrived promptly and contained the blaze within about 30 minutes, with authorities recovering the seven bodies and transporting the injured to Thong Nhat General Hospital; one minor injury has since been discharged. Police and the Ministry of Public Security said they have launched an investigation into the cause of the fire, with state media and local reports confirming the fatalities and injuries. The incident is consistently described across multiple outlets, all noting the same route and casualty figures while the investigation proceeds.