While the investigations were still on, Victoria Police has already arrested three attackers.
A 17-year-old Sydenham boy was charged with intentionally causing serious injury, robbery and theft and has been remanded in custody to appear at a children's court today.
Earlier, a 16 year-old St Albans boy was charged with serious assault and remanded in custody.
The third arrest in the case, a 15-year-old Ascot Vale boy has been released and is expected to be charged on summons.
Officials at the Indian consulate in Melbourne are also in regular touch with the victim's family.
"We are in regular touch with the Singh's family and have extended all the support we can offer" Nirmal Chowdhry at the Indian Consulate in Melbourne, who visited the victim at the hospital, said.
The Indian consulate is helping out the family to speed up the visa process of Singh's parents who are currently in India.
Yesterday a group of Indian community members including Councillor and former Darebin mayor Tim Singh, and Australian Labour Party member Manoj kumar visited the victim's family to show their support and express sympathy.
Kumar said "safety is a biggest concern in nearby CBD area especially for students who work late night for their expenses and this is one of the example of safety failure."
