Owner of a placement agency was stabbed to death at Nihal Vihar on Sunday night. The victim was alone in his house when the incident took place. Nothing was reported missing from the house. According to the police, Manoj, 30, lived at R Z block in Nihal Vihar area with his wife Sangeeta and sister-in-law Laxmi. He ran a placement agency near his house. ‘Sangeeta had gone to her native place in district Dhumri, Jharkhand, for the last few days,’ said a senior police officer. Police received a call around 11 pm and a team reached the spot to find Manoj’s body lying in a pool of blood. His throat had been slit with a sharp-edged weapon. The house was not ransacked and the entry appeared to be friendly, said the officer. Police has registered a murder case.