A serious accident between two passenger buses killed two people, a husband and wife, and wounded 22 others on Monday in Vinh Phuc Province in northern Vietnam. At around 3:25 pm, the Trung Kien passenger bus was traveling on the Noi Bai - Lao Cai expressway when it was rear-ended by another passenger bus from Bao Yen bus lines in the area of Lap Thach District. Two passengers, a married couple sitting on the front seats of the Bao Yen passenger bus, were killed instantly in the collision while 22 others were injured, of which five were serious. The victims were admitted to Vinh Phuc General Hospital. Initial investigations show that the accident occurred after a flat tire caused the driver of the Bao Yen bus to lose control, according to a statement made by the Vietnam Expressway Corporation.