India, June 28 -- The Kolkata police on Saturday set up a five-member Special Investigation Team (SIT) to probe into the alleged gang-rape of a 24-year-old student inside a law college at Kasba in south Kolkata on Wednesday late evening.

A senior police official said officials have found an incriminating video clip in one of the three mobile phones seized from the accused persons.

"We have found a video clipping of approximately 1 minute 30 seconds, which corroborates the statements made by the victim in her complaint," said an official.

A first-year student of South Calcutta Law College was allegedly gangraped on Wednesday in the security guard's room on the ground-floor of the college campus.

Report of the victim's medical examinati...