New Delhi, June 8 -- Three days after a DU assistant professor was found dead at her residence in east Delhi, police on Sunday arrested a couple from West Bengal and apprehended their 13-year-old son, unravelling a conspiracy to kill the 45-year-old over a dispute regarding an ancestral property she owned in the eastern state. The suspect family were tenants in the property in West Bengal's Bardhaman that the professor inherited from her grandmother. Investigators revealed they travelled 1,400km by train to Delhi to execute the murder on June 3. Officials said the three suspects were held on Sunday morning in Bardhaman, and the couple will be produced before a city court on Monday. Their son will be produced before a Juvenile Justice Board (JJB), said officials, adding that they would request the board's permission to bring the boy to Delhi. "If the board turns down our request, we will ask it to send the boy to a local correctional home for boys," said a police officer. On the afternoon of June 4, the body of the assistant professor was found at her locked sixth-floor flat in a high-rise residential apartment in Vasundhara Enclave after her sister informed police that she was not answering her phone.Special commissioner of police (law and order, zone-1) Devesh Chandra Srivastava said the accused conspired to kill the professor and came to Delhi prepared. Deputy commissioner of police (east) Rajiv Kumar said the victim had rented the Bardhaman house to the couple in 2023 for Rs.10,000 per month. "Around a year ago, the couple offered to buy the house, but the professor refused and asked them to vacate the property because she did not want to sell her grandmother's house," said the DCP. "The couple, however, did not vacate the house, claiming they spent Rs.1.5 lakh on its repair and renovation. The dispute escalated, and the assistant professor gave the couple a final warning, following which they conspired to kill her," Kumar added....