Another man was crushed under the wheels of the same train in Chattogram city's Pahartali area that rammed into a microbus at a level crossing at Mirsharai upazila on Friday.
The identity of the deceased could not be known immediately.
The accident occurred in Pahartali Railgate area of the city before the train entered Chittagong station this afternoon, said Mohammad Moniruzzaman, assistant transport officer of Railway.
However, the railway authorities claimed that it was a suicide.
"We are investigating the accident," he added.
Earlier at around 1:30 pm, the Mahanagar Prabhati train ended up dragging the microbus along the track from a level crossing in Mirsharai upazila, killing 11 people.
The dead were all travelling by the microbus. Eleven of them died at the scene, while six others were injured, police and fire service said.