The Bengaluru police Thursday arrested four of the seven persons detained a day earlier in connection with the sexual assault of a woman on New Years day in Kammanahalli of the citys eastern region. Sources said police have also identified the main attacker in the case as 'Leno', a youth of the same locality who had been stalking the woman for a while, reports the Indian Express.


A woman was groped and assaulted by two men on a scooter near her home in the Kammanahalli area of Bengaluru. The entire incident was captured on CCTV cameras, even as bystanders a stone's throw away did not intervene.


The attacker, a BCom student in the city, has been placed under arrest with his accomplice Ayyappa, who waited on a scooter while his friend molested and assaulted the young girl around 2.45 am, Sunday on a lonely street where the victim lived. Two others, Raju and Chinnu, who were part of a group of youths stalking the victim and her friend, have also been arrested.


Police began their hunt by scanning mobile phones active in that area when the incident took place. "We prepared a list of mobile numbers active between 2am and 3am on January 1. After filtering out women and senior citizens, we will start calling the remaining numbers, seeking details of the receiver," a senior police officer said.


While no complaint has been filed, the police have filed a complaint suo moto.


Image: A video grab of the incident.