Students of A.S.L. Pauls College of Engineering and Technology at Solvampalayam near Kinathukkadavu in the outskirts of the city resorted to road roko at Elur Pirivi, on the Coimbatore to Pollachi Main Road, on Friday morning, alleging that the principal allegedly harassed girl students and a college staff. College Principal C. Kumar denied the charges. The police said a case was not registered as the students neither gave a written complaint on their allegations nor pointed out any specific incident. “The college chairman said that he will meet the students”.