The accused, Rinku had allegedly shot dead Hardeep Singh who worked as the editor of a journal published by the Inter-University Accelerator Centre, an institute run by the University Grants Commission (UGC).
The incident took place on Monday after an altercation had broken out between the two, over Singh objecting to loud music played by Rinku in Kishangadh locality. Rinku owns a gym on the ground floor of the building in which Singh lived, police said.