The Supreme Court on Tuesday will hear the plea of two gang rape survivors from West Bengal who want a Special Investigation Team or CBI to probe their cases. One of the survivors is a minor from the scheduled caste community, allegedly gang-raped in Murshidabad district on May 9. The other is a 60-year-old from East Midnapore district, allegedly gang-raped on May 4 in front of her 6-year-old grandson.