Police said the man slit his mother's throat in north-west Delhi's Vijay Nagar area after which he surrendered before the police on Saturday night.
The accused has been identified as Deepak who allegedly slit his mother's throat with a kitchen knife following a quarrel.
"The accused Deepak surrendered before Model Town police station around 1.25 a.m. and reported that due to some quarrel he slit the throat of his mother Asha Devi. A team rushed to the spot and Devi's body was recovered. One bloodstained knife along with bloodstained bed sheet, and pillow and the bloodied jeans and T-shirt of Deepak were found at the house. Devi's body was shifted to BJRM hospital for post-mortem," said Vijayanta Arya, Deputy Commissioner of Police (North west).
A case of murder was registered and Deepak was arrested.
"During investigation, Deepak disclosed that he had demanded money from his mother for liquor however after she refused, a quarrel broke out between the two and he allegedly slit her throat with a kitchen knife. He also disclosed that he suspected his mother was having an illicit affair," said Arya.
Police said that Deepak was unemployed while his mother was a househelp. Deepak lived with his mother and younger brother. His brother had gone to a nearby market at the time of the incident.
( With inputs from IANS )