Mamata Banerjee (File photo)

NEW DELHI: West Bengal chief minister Mamata Banerjee on Sunday expressed shock over the gang-rape of a medical student in Durgapur and said that the private medical college where the victim studied should explain how she was out at night.“The girl was studying in a private medical college. How she came out at night at 12:30? So far I know, it (the incident) happened in a forest area. Investigation is on. I’m shocked to see the incident, but private medical colleges should also take care of their students. Especially, the girl students should not be allowed to come outside at night-time. They (female students) have to protect themselves also,” she told reporters.Banerjee added that three people have already been arrested based on the girl’s statement, and police are looking for others who could be involved in the ghastly crime. She assured that the guilty would receive strict punishment.