Two youth in their early 20s were killed in a scuffle over Rs.300, police said Saturday.
The crime occurred around 9.30 p.m. Friday in Sultanpuri area of west Delhi when Rahul along with his friend Sachin went to ask for the Rs.300 that was borrowed by Sanjay.
A heated argument took place, and Rahul attacked Sanjay with a knife, police said.
On hearing his screams, Sanjay's two elder brothers and father came to the spot and saw him lying in a pool of blood. They attacked both Rahul and his friend Sachin.
Soon the three were taken to the hospital, where Rahul and Sanjay were declared dead on arrival.
Sachin was severely injured and is undergoing treatment in the hospital.
Police have arrested Sanjay's brothers and their father.