Two men on a bike stabbed to death a 19-year-old student of Swami Vivekanand College near Sindhi society in Chembur on Thursday evening. The incident has been caught on a CCTV camera in the area. Police claim to have identified one of the accused, suspected to be a college student, from the footage. Chunabhatti police said prima facie the murder seems to be the fallout of a love affair.