"The case has been transferred from local police to CB-CID for further investigation," Director General of Police K Ramanujam told PTI.
Meanwhile, the autopsy on the body conducted at the Government Hospital at Chengalpattu in Kancheepuram district revealed that she had stab injuries in four places, which is believed to have led to her death, police said.
Police investigations have revealed that the deceased, Uma Maheswari, left her office at 10.13 PM on February 13 and her phone was switched off around 10.30 PM, they said.
Police said Inspector Subbiah of Kelambakkam police station has been placed under suspension for not taking action on the victim's father's complaint that his daughter was missing since February 13.
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Ramanujam visited the spot this morning along with ADGP T K Rajendran and reviewed the status of the case.
The woman's body was found near her office premises near Siruseri in the city outskirts yesterday, nine days after she went missing.