Kolkata, Oct. 13 -- The West Bengal Police have arrested the fourth suspect, identified as SK Nasiruddin, after a marathon interrogation in Friday's alleged gang-rape of a 23-year-old MBBS student from Odisha outside her private medical college in industrial Durgapur, about 170 km north-west of Kolkata, official sources said today.

The Durgapur-Asansol Township Police have already arrested three suspects, who have been given 10-day police custody after they were produced before a local court yesterday in the gang-rape. They were identified as Apu Bauri, Sheikh Firdous and Sheikh Riyazuddin.

The fourth suspect, identified as SK Nasiruddin has been arrested after a marathon interrogation in the crime, which was committed when the survivor h...