New Delhi, April 21 -- A 37-year-old man and his wife have been arrested for allegedly killing a retired Reserve Bank of India official inside his house in New Delhi's Mandir Marg area on Sunday evening. The accused told police that they killed the 63-year-old man after he refused to lend them money. The victim, Madhav Ram, was found dead at the residence with multiple stab injuries on Sunday. Police said while the body was discovered at 7.30 in the evening, the murder took place during morning or afternoon hours. "It looked like the accused had known the victim and his family. He knew the man would be alone and his family was out for some work. There was no ransacking," a senior police officer said. CCTV footage of the neighbourhood were a...