Tania, a BA first year student of private university, had gone to Lajpat Nagar with his friends on Wednesday last and was looking for an address when a person at a sweet shop started mocking him.
Following this, fight erupted between them during which Tania was assaulted with sticks and rods by eight men.
Tania died of injuries in his room in Green Park Extension on Thursday.
The police say his body was taken for a post-mortem at the AIIMS hospital.
The postmortem report revealed serious internal injury.
Meanwhile, All Arunachal Pradesh Students' Union (AAPSU) and All Nyishi Students Union (ANSU) along with several other organisations of the state condemned the incident and demanded the Delhi government to arrest the culprits immediately and to punish them severely.
