NEW DELHI, July 19 -- A 36-year-old man was allegedly murdered by his wife and his cousin - who were purportedly having an affair - in West Delhi's Uttam Nagar on Sunday. The two tried to pass off the murder as an accidental electrocution, but the truth began to unravel after the victim's brother stumbled upon incriminating messages, police said on Friday. Police identified the deceased as Karan Dev, a resident of Om Vihar. Police identified his wife, Sushmita Dev, 35, and his 24-year-old cousin, Rahul Dev, as the accused. The case came to light on Sunday when police received a call from Mata Rooprani Maggo Hospital in Uttam Nagar, reporting that a man had been brought in dead, according to deputy commissioner of police (Dwarka) Ankit Singh. "The patient, Karan, was declared brought dead and was shifted to Deen Dayal Upadhyay hospital for post-mortem," he said. "The family told us that Karan died of electrocution after he came in contact with the wire from the extension cord which has a high level of electricity running," an officer said. However, given the age of the deceased and the unclear circumstances, police proceeded with a post-mortem the next day. "The doctor confirmed that he had died of electrocution but also verbally told us that the victim's stomach contained some sleeping pills, which raised suspicion. The viscera was collected and preserved for analysis," the officer cited above said. The investigation took a decisive turn on Wednesday, when Karan's younger brother, Kunal Dev, approached police with screenshots of WhatsApp messages exchanged between Sushmita and Rahul. The chats appeared to lay out a step-by-step plan to murder Karan. "A case on charges of murder was registered," DCP Singh said. "Sushmita was updating Rahul in real time on the night of July 12-on what she was feeding Karan, whether he had fallen asleep, and at what point she was struggling to execute the plan. She called Rahul over to help her," said an officer. Based on the chats, police said their investigation led them to believe that Sushmita spiked Karan's food with sleeping pills. "It appears that the wife cut the heavy wire attached to the extension cord from a point and when he was in deep sleep, she and Rahul touched his finger to the live wire after switching it on," the officer said....