Eyewitnesses said the foreigner was driving a motorbike when he hit Nguyen Thi Thuy, a local woman, from behind on a section of Le Dai Hanh Street in front of The Flemington building in district 11.
As a result, both fell to the street.
Instead of helping Thuy stand up, the man revved up the engine with the intent of running away. Dissatisfied with his inappropriate behavior, Thuy tried to stop him.
Le Duy Vuong, a passer-by, showed up and demanded the foreigner give Thuy an apology and to compensate for her damage.
However, the unidentified foreigner punched Vuong hard in the face and even chased after him.
Angry, cabbies, motorbike taxi drivers and many passers-by tried to stop him. After being stopped, the foreigner called two friends for help, but local policemen arrived at the scene soon after.
Vuong suffered bleeding from his one of his eyelids and was taken to a hospital.
Police declined to divulge the foreigner’s identity.