After the incident, the youth identified as Umesh walked to a nearby police post with the blood smeared weapon and admitted to the crime.
According to a senior police official, parents of the duo had gone to Rohini to resolve a property issue during which the victim, Vandana, got into an argument with her brother, Umesh, over the ownership of their office.
Vandana looked after the family business along with their father.
"After killing her, Umesh panicked and tried to even hide the body. But then he left her on the bed and walked to the nearest police post. Policemen deployed there called the PCR and once the cops arrived he handed over the knife to them and narrated the incident. He was then taken to the police station," the official said.
The parents later staged a protest at the police station claiming a conspiracy in the incident. They claimed that Umesh has been framed to save the actual killers.
"A case of murder has been registered and further probe is on," the official added.
