Nagpur Nov 29 PTI A 20-year-old man riding the scooter was stabbed to death by the pillion rider who suspected the formers involvement in a murder conspiracy against him in Nagpur police said on Monday The accused identified as Sher Khan 22 a notorious history-sheeter and his friend Fardin Khan 21 were arrested by the police for allegedly killing Imroj alias Immu Rashid Qureshi on Sunday midnight an official said The official said that Khan suspected that the deceased had ratted on him to members of his rival gang of criminals Khan who was riding pillion stabbed Qureshi near Sanjay Gandhi Nagar He was joined by Fardin Khan in the attack the official added Qureshi was declared dead by doctors in a hospital A case of murder was registered PTI COR NSK NSK