At 9 a.m., while on duty at the Bac Giang - Lang Son expressway toll station, a team of traffic police discovered a group of people driving the large-displacement motorbikes on the expressway.
When the police issued stop signals, they ignored and sped up.
One of them hit a police officer and injured him.
The same day, police seized more than 10 of the motorcycles. Camera footage at the toll station showed that the convoy had about 30 motorcycles.
According to the testimony of some people in the group, around 6 a.m. on the same day, they gathered in Long Bien District in Hanoi and drove up to Lang Son, around 150 kilometers from the capital.
Police are cooperating with relevant agencies in Bac Giang and Bac Ninh to hunt for the remaining offenders.