Seoni (MP): A 23-year-old student was killed here today after she was dragged by her hair while on her way to college and her head smashed with a stone by a man who was allegedly putting pressure on her to withdraw the sexual harassment complaint against him, police said. The incident took place around noon when the Dalit student was walking to the Netaji Subhash Chandra Bose Government Girls College here — around 350 km from Bhopal, police officials said.