The incident occurred on Friday when a man went to the house of the widow, police said, adding they are relatives.
Crimes against women would soon attract stricter punishment in the State, Chief Minister Edappadi K Palaniswami announced in the Assembly on Wednesday.
Several initiatives by the government, including the TN police's Crimes against Women and Children unit that has been operating since March 6 last year, are already in place, the announcement said
The three accused, who were consuming alcohol sitting on another table in the restaurant, allegedly started making indecent gestures
A case had been registered and all accused have been arrested.
The baby was recovered after a woman heard him crying while she had gone to fetch a bundle of grass on Saturday evening.
The incident occurred after the doctor had examined all patients inside his clinic and sent away his staff, he said.
The order was issued to State Police Chief Loknath Behera, who has also been asked to submit a report on the case soon.
The survivor is on ventilator and at present her blood platelet count is low. She may undergo neurosurgery.
Ashokraj , a resident of Vettuvankani, was earlier reluctant to lodge a complaint, but the helpline number made his work easier. He filed a complaint with the Neelankarai police station.
Identified as Alpesh Deshmukh, the lab technician allegedly collected the coronavirus sample on July 28, informed the police. He has been sent on police remand till July 31.
In a shocking incident, a man allegedly sexually assaulted his 14-year-old daughter under IV Town police station limits here.
However, the agency will tread cautiously while seeking custody due to the sensitive nature of the case she is currently implicated in.
The report said Swapna was arraigned on the basis of evidence that proved that she had forged documents and produced fake witness before the Internal Complaint Cell of Air India.
The National Commission for Protection of Child Rights (NCPCR) has taken suo motu cognisance of the case.