BERHAMPUR/BHUBANESWAR: A group of 10 allegedly took turns gang-raping a 20-year-old college student on a beach in Odisha’s Ganjam around 9.30 pm on Sunday after assaulting and dragging away the male friend with whom she had stepped out. Seven of the suspects were detained Monday based on a complaint filed by the survivor. “We are raiding various locations to trace the remaining three suspects. Their criminal antecedents, if any, are still to be verified,” Berhampur SP Saravana Vivek M said. This is the second instance of a gang rape in a coastal Odisha town after a Class IX student was allegedly assaulted in a beachside hotel in Puri last week.The crime was reported at 11 pm Sunday after the survivor’s friend persuaded her to visit a police station with him. “The allegedly drunk perpetrators at first hurled obscenities, to which her friend objected. They then beat him up, gagged the woman and raped her,” a police officer said, citing the FIR.The survivor underwent a medical examination and is being counselled.