Three people were arrested two days after the atrocity but many still remain free. BJP leader Sushma Swaraj tweeted "we will not let this go unpunished" and said Mrs Bijoya Chakravarty, the party MP from Guwahati, had met the Director General of Police this evening.
The victim was molested when she was returning home after a party at a city bar on Monday. The amateur video shows the mob, consisting of around 20 men, beating the girl before stripping her.
The three people arrested by the police have been charged with trying to outrage the modesty of a girl.
"Three people have been arrested and three others are evading arrest. They, however, have been identified," Apurba Barua, Senior Superintendent of Police, Assam Police, told NDTV.
The rate of crime against women in Assam is 36.9 per lakh - almost double of the national average of 18.9.
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