A 27-year-old UPSC aspirant was arrested early Tuesday morning for allegedly killing a seven-year-old boy over a month ago. “Shakya told police that he kept visiting Karan Singh’s house but for unknown reasons he started objecting to him meeting his son. Since the area was under constant police presence in search of the boy, Shakya, it is said, couldn’t find an opportunity to dump the body. Police said Shakya was Karan Singh’s tenant for the past three years. According to police, the boy’s father Karan Singh had lodged a missing complaint for his son, Ashish, on January 6 at Swaroop Nagar police station..