Calcutta, Aug.16 :     Three months after actress Rumni was found dead in her Jadavpur flat, her husband, teleserial director Debangshu Sengupta, has been charged with her murder. The Criminal Investigation Department (CID) submitted a chargesheet against Debangshu in court on Wednesday. Initially, the police had thought that the actress had committed suicide by hanging herself on May 17. Debangshu was arrested a few days later on the basis of a complaint filed by Rumni's parents. The CID took over investigation of the case after the needle of suspicion turned towards the husband. Investigators, led by special superintendent of police, CID, Mukul Sengupta, cracked the case after it was revealed the salwaar which Rumni was wearing had no drawstring. It was, thus, clear that someone had slipped the salwaar on the actress after she had died. The murder weapon, a block of wood, and a blood-stained nightie worn by Rumni that night were also recovered. According to CID officers, Debangshu had confessed to his crime on interrogation. The chargesheet said Rumni, an impulsive and emotionally-charged person who was in the habit of drinking, was murdered and then hanged by Debangshu. It also quoted forensic findings which proved that she had been beaten up before being killed. 'A detailed analysis of her stomach content confirmed that she was given alcohol mixed with sleeping pills,' the report added. According to the chargesheet, there was a heated exchange between the inebriated couple on May 17. Their argument took a violent turn when Debangshu attacked his wife with a block of wood. Rumni was killed by one of the blows. Realising that he had killed his wife, Debangshu went about arranging the scene to make it look like a case of suicide. He slipped a salwaar around her waist, but overlooked that fact that it didn't have a drawstring. He then 'hanged' her from the bedroom fan with a dupatta. According to the CID chargesheet, Debangshu used to suspect his wife of having an affair with her ex-husband. Besides, a bitter 'professional dispute' between the couple had also played a role in the murder.