New Delhi, Jan. 17 -- A 21-year-old man was stabbed to death and his two friends were injured in an attack by some acquaintances over a dispute, in southeast Delhi's Jaitpur, on Thursday night, police said. One of the accused was reportedly harassing the victims on social media, they said, adding that five juveniles were apprehended and three men were arrested on Friday. Police said that, as per the information they received at 11.18pm, a group of seven to eight boys was seen attacking another group. The victims, Krishna Sahu, 21, was stabbed over half a dozen times, in his chest, shoulder, and back, they said. A senior police officer said, "We reached the spot immediately after the call and found that one of the suspects, Deepak Kumar, 22,...