Following modus operandi of Kolkata’s 'Stoneman' in 1980s, a sleeping youth was stoned to death in the city on Monday. It has been learnt that a man named Raju Naskar had a long-standing dispute with deceased Somnath. Quarrel between them intensified over time which eventually led to murder, suspects police. Raju was arrested from his hometown Jaynagar near Kolkata.