A fast track court presided by Additional Sessions Judge T R Naval awarded the jail term to Delhi resident Lokesh Kumar for repeatedly raping the 21-year-old victim after giving her tea laced with sedatives and also threatening to kill her parents.
The court noted that the woman had given birth to Kumar's child which was confirmed by a DNA test.
It also imposed a fine of over Rs 1.10 lakh on Kumar, a father of four kids, and said that if the amount is realised, Rs 75,000 should be given as compensation to the victim.
According to the prosecution, Kumar had raped the wife of his brother-in-law who used to live in the same house in May 2010 after mixing stupefying substance in her tea.
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The police said she became unconscious after consuming tea and Kumar raped her and also took her nude photographs. Thereafter, he used to rape her repeatedly after threatening to make her photographs public and also kill her parents.
In October 2010, when she became unwell and went to her parents' house, she disclosed the facts and also gave birth to Kumar's child, it said, adding that a case was registered against the accused in April 2011 and he was arrested.