A student of the National University of Science and Technology (NUST) committed suicide by throwing himself in front of the train.
The police were called to the Nev Stands railroads in the suburb of Covdrai Park in Bulawayo at about 20:00 on Monday after a report on the body on the trails.
Blessing Mangena, a student of the first year, left a message of suicide for a younger sister in which she spoke of her shame to cheating on her boyfriend.
A bright student of science living in Covdrai Park with his sister, the last time he was seen leaving the university to return home later on Monday afternoon.
A friend said: "She left the suicide in which she said that she was pregnant with another man, while her family only knew her boyfriend Vita.
"She said that she was sorry she had to live for herself, but she could not bear the shame that the discovery of pregnancy would lead to her boyfriend, whom she loved very much."
The parents of former high school students in Sizania live in South Africa.
Then suicide appeared in similar cases in which a four-year-old local government student at the Midlands State University committed suicide hanging at the Gwer Camp this week.
Walter Temera hanged himself after he allegedly discovered that his girlfriend was a lecturer at a university.