New Delhi: A 20-year-old man was arrested by the police after he allegedly killed his step-father following a quarrel with him in Dwarka, officials said on Thursday. The incident took place on Wednesday afternoon. According to the police, the accused identified Yogender killed his step-father Devender, as he suspected that his step-father had bad intentions towards his younger sister.

The accused's mother had started living with the deceased a year after her husband passed away in 2011. The woman also has a seven-year-old son from her marriage with Devender, a senior police officer said. "A quarrel broke out between Yogender and his step-father Devender over some issue. When the argument turned ugly, he took out a knife and attacked his step-father," the officer said. After killing his step-father, the accused called the police and confessed that he had killed his step-father. The police thereafter took Yogender into custody.