The deceased was a resident of Dakshinpuri
The deceased identified as Hemant was a resident of Dakshinpuri. He was living there along with his family.
Police said the incident was reported around 7 p.m. when Hemant was admitted at Madan Mohan Malviya Hospital by his friends, Deepak and Abhay.
"Hemant was declared brought dead. He worked in Nukkad Wala restaurant at Saket PVR Anupam complex", said Deputy Commissioner of Police Vijay Kumar.
"He received a knife injury on his chest which pierced through his heart," Kumar said.
According to sources, Hemant had an argument with unknown persons in the restaurant following which he was stabbed by the knife in chest.
Reportedly, Malviya Nagar police is investigating the matter and has arrested three people including the supervisor of the restaurant.