"Anil Kumar of Vijaypur town was following the girl for sometimes now, but she always refused," a police officer told PTI.
The officer said that today again the boy called the girl and told her that he would end his life if she rejected his "love proposal."
"As per the statement of the girl, she again refused the proposal and the boy warned her that he would end his life. She said she heard a loud cry and sound of moving train on her phone," the officer said.
However, the family members of Anil blamed the girl's family for the "murder" of their son and held a protest and blocked Jammu-Pathankot national highway.
"Anil's family blamed the girl's family for the murder of their son and blocked the highway for sometime. They called off their protest demonstration only after senior police officers and officers from the Railway Police reached the spot to pacify them," the officer said.
The officer said that the Railway Police assured that family that a through and fair investigation would be conducted into the incident.