India, Oct. 12 -- West Bengal CM Mamata Banerjee on Sunday described the alleged gang rape of a medical student in West Bengal's Durgapur as shocking, adding that her government has zero tolerance for such incidents.

Three accused have been arrested and police are conducting search for others, news agency PTI quoted Mamata Banerjee as saying.

No one will be spared, Mamata Banerjee vowed.

Mamata Banerjee also asked private colleges to ensure security within and around campuses.

A medical college student who hails from Odisha's Jaleswar was allegedly raped by some men outside the campus of the private medical college in Durgapur, police said on Saturday.

The incident took place on Friday night when the second-year student went out with...