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 Thursday.
The accused - Yogender killed Devender as he suspected that his step-father had bad intensions towards his younger sister, police said.
The incident took place on Wednesday afternoon.
The 45-year-old mother of the accused started living with Devender a year after her husband passed away in 2011.
The woman also has a seven-year-old son from her 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, Yogender called the police and informed them that he had killed his step-father.
The police thereafter took the accused into custody.
The victim was rushed to a nearby hospital where he was declared brought dead, the officer said.
A case has been registered and the accused has been arrested, he said.
During interrogation, the accused told the police that he suspected that Devender had bad intensions towards his 15-year-old sister, the officer said.
The deceased is a permanent resident of Aligarh and was staying here at Najafgarh, police said, adding that further investigation is underway.
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