Naresh Kumar, 25, was killed by his father Sita Ram around 12.15 a.m. Monday in north Delhi's Shalimar Bagh. 
Kumar, a habitual drinker, had demanded money from his mother to buy liquor.

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"When she refused to give him money, he started beating her. He also got into a fight with his father, who then hit him on the head with an axe that led to his death," said a police official. 
Police said that they have arrested Sita Ram. 
Kumar used to regularly beat his parents whenever they refused to give him money to buy liquor, police said.