It is to be noted that actor Rajinikanth was summoned to appear for the inquiry on January 19.
At least 13 people were killed and hundreds injured in the firing that took place on May 22 and May 23, 2018.
Vedanta, which aims to delist its shares from the London Stock Exchange, has interest in hydrocarbons, metal and mining business in India.
Vedanta has sought a permanent injunction against the Tamil Nadu government from interfering with the operations of its copper smelter, according to the petition filed with the NGT.
Thoothukudi Sterlite plant closure: DMK calls it 'eyewash', Rajinikanth, Kamal Haasan hail 'people's victory'
If this decision had been taken without the killing of 13 lives, the government's good intention could have been appreciated, Stalin told reporters.
Thoothukudi Sterlite copper smelter plant permanently sealed on Tamil Nadu government order days after deadly protests
In a statement, Chief Minister Edappadi K Palaniswami said that the plant was closed respecting sentiments of people.
Meanwhile, Transport Additional Secretary Davidar has said that a solatium of ₹1.4 crore to 52 injured victims has been given so far.
Adequate facilities have been made to cater to regular flow of vegetables and other kitchen ingredients to the markets, while supply of milk and water has been constant.
Violence broke out on May 22 during protests demanding the closure of the factory over pollution concerns with police opening fire, resulting in the death of 13 people.
After three days, government buses have started to operate in the district and the those coming from Kovilpatti and Tiruchendur have started arriving at Thoothukudi.
Snowlin, who was killed in police firing on May 22, was just a teenager but had already become one of the prominent leaders of the anti-Sterlite protests from Madha Kovil.
Anti-Sterlite protests: MK Stalin protests police action while CM blames Opposition for Thoothukudi violence
Tuticorin witnessed large-scale violence and arson on Tuesday which led to the killing of 10 people in police firing.
Sterlite protests Day 3 UPDATES: Vedanta founder Anil Agarwal says he is 'in pain' over Thoothukudi deaths
On Wednesday late night, a youngster who was under treatment succumbed to injuries taking the toll to 13.
The protests against the copper smelter renewed this year after the company announced expansion of its plant which raised fear of increase in pollution among the locals.
Court says postmortem can be done as per schedule; tells State to file status report into the violence during protest