Parts of Paras Bhasin's body were found scattered near east Delhi's Pandav Nagar railway track Saturday afternoon.
His father Sanjeev Bhasin said: "My son left home at around 3.30 p.m. Saturday and around 4.15 p.m. we received a call about his death from an unknown number."
"I rushed to the Pandav Nagar track with my family and informed police," said Sanjeev.
Police said victim's body parts have been sent to Lal Bahadur Shastri hospital for post-mortem while his head is still missing.
"Initial investigation suggest that it was a suicide attempt as victim's body parts were received within 100 metres radius. In 90 per cent cases it happens when someone comes in contact with a speeding train," said a police officer.
However, the victim's family claim that it is a cold-blooded murder and they suspect the hand of the family of his girlfriend, whom he alleged married secretly.
"Paras secretly married a girl, who belongs to a rich family and currently stays in Uttar Pradesh's Ghaziabad, in May against the wishes of her father," said Uday Bhasin, victim's brother.
"The girl's father used to threaten Paras to end up the relationship. He also used to call my father to warn Paras," alleged Uday.
Uday said that despite the threats, they married but the girl is living with her family and Paras was living with us as he wanted to disclose their relationship after completing his studies and starting a business, said Uday.
Police said that we are investigating from all possible angles whether it was a suicide or there is any foul play in the case.