dibrugarh the sensational murder case of assam medical college hospital doctor sarita toshniwal took a dramatic turn on wednesday with police arresting a doctor in connection with the incident police arrested deepmoni saikia a secondyear pg student of obstetrics and gynaecology department of amc based on the statement of the accused ward boy kiru mech and from circumstantial evidence deepmoni was picked up from amc on tuesday evening after interrogation at dibrugarh police station he was arrested on wednesday morning talking to the media sp dibrugarh rana bhuyan said the conspiracy to murder sarita was hatched by deepmoni a month ago deepmoni who is one batch senior to sarita used to do duty together in the obstetrics and gynaecology ward deepmoni and sarita had a cordial relationship but they were not on good terms for the last few months deepmoni used to call sarita on her mobile but she never responded after being spurned by her he decided to take revenge he hatched a plan and sought the help of kiru he manipulated kiru by promising that he would make his job permanent he even threatened to fire him if he refuses said bhuyan saritas murder on may 9 had shaken the entire state sarita was supposed to marry roshan agarwal her batchmate on july 7 the sp added that deepmoni and kiru made their first attempt to kill sarita on april 24 but they had to abort the plan at the last minute as the onduty nurse did not leave at her scheduled time moreover the ward was packed to capacity with patients and their attendants on may 8 deepmoni was allotted night duty along with sarita but he remained absent citing illness sarita was alone on duty the ward boy and a nurse were also on duty the next morning may 9 deepmoni and kiru committed the crime after the onduty nurse left the sp said when kiru tried to throttle sarita in her sleep she screamed loudly as she was trying to wriggle free deepmoni joined in and forcefully pinned her to the floor deepmoni was wearing a pair of surgical gloves during the crime it was a preplanned and coldblooded murder a woman attendant from jorhat who was in the ward at that time heard the victims loud screams she even tried to find out but she was prevented from entering the room by the accused doctor said the sp the sp added that the accused doctor after committing the crime removed the clothes of the victim and molested her during interrogation kiru confessed to the crime he divulged this on the second day of the crime while leading us to recover the victims cellphone which he had concealed in his fatherinlaws house at bongalgaon behind the amch campus weve been keeping a close watch on deepmoni weve recorded kirus confession in front of a magistrate to make the case watertight he said kiru said deepmoni was the mastermind he promised me a permanent job he