Delhi news: A 17-year-old youth was allegedly stabbed to death by two juveniles following an argument over one of them harassing his sister, police said on Saturday. The teen had allegedly slapped one of the juveniles earlier for harassing his sister, they added. The police received information about the stabbing at 9.22 pm on Friday. Manoj Kumar Negi of Kumau Gali in Baljeet Nagar was taken to Sardar Patel Hospital where he was declared dead, Deputy Commissioner of Police (Central) Shweta Chauhan said. Both the juvenile assailants have been apprehended and the weapon of offence recovered, the police said.