Another 17 year old boy also surrendered to the Police over the incident.The crime took place near a tuition class in Matara where the 19 year old was stabbed in front of passersby. Main suspect and another teenager have been arrested over the killing of a student in Matara.The Police said that a 17 year old boy, the main suspect in the stabbing of a 19 year old youth in Matara, was arrested and remanded. The incident was captured on CCTV cameras. (Colombo Gazette)