According to the Zing online newspaper, the second accident came at 10:30am when a woman, Bui Thi Hiep, 30, was killed after a speeding truck struck her motorbike head on literally within a metre of the previous accident.
An hour earlier, emergency crews were on that precise spot at 9:30am when two motorbikes collided head on sending four people to the hospital with life threatening injuries.
Full details of the two accidents were not immediately known.
It is also not clear whether debris from the first accident was left on the roadway and contributed to cause the second accident.
Police urged drivers to exercise caution when driving in the area. Their investigation into the crashes continues.