Nido Taniam, son of Arunachal Pradesh Congress legislator Nido Pavitra died on Thursday allegedly after being beaten up at a market area in Lajpar Nagar here.
The incident has sparked protests across New Delhi over the security of students from the north-east.
Taniam , 18, was first attacked at 2 pm on Wednesday after an argument broke out between him and a shopkeeper over his hair colour.
It is being alleged that racism could have been one of the triggers for the quarrel.
Arunachal Pradesh resident commissioner Avinash Mishra said Taniam was in Lajpat Nagar to visit someone and sought the shopkeeper’s help since he was unable to locate the address on his own.