The cumulative tally stood at 82,275 and the active cases at 35,656, the state health bulletin said.
Chennai remained at the top among the 37 districts, as it recorded 1,992 of the fresh cases, taking its total to 53,762, followed by Chengalpattu (5,051), Tiruvallur (3,524), Madurai (1,995) and Kancheepuram (1,791).
With 54 more fatalities reported in the last 24 hours, the number of COVID-19 casualties rose to 1,079.
Chennai also shared the unenviable record of having the maximum fatalities--809, of the total 1,079 deaths in the state so far. According to the bulletin, eight of the 54 deceased were patients without 'comorbidities' and the dead include an 18-month old boy baby from Villupuram who died on June 27 due to spastic cerebral palsy, 'global developmental delay' and 'aspiration pneumonia'.
Patients with comorbidities who succumbed to the virus include a 91-year old man suffering from diabetes mellitus. Among the districts, Chengalpet with 5,051 total cases and Tiruvallur with 3,524 of them remained on the top of the charts after Chennai.
With government enhancing testing of samples, 32,948 specimens were tested on Sunday, taking the total to 11.10 lakh till date. Meanwhile, Palaniswami and Stalin sparred over the virus situation in the state, with the latter alleging that the ruling dispensation was not considering the suggestions given by him and that he was not doing politics over the matter.
On the positive side, 1,443 Covid-19 patients were discharged from various hospitals, taking the total number of cured persons to 45,537.
So far, 11,10,402 samples (32,948 samples today) have been taken for testing. COVID-19 tests were being done in 47 government and 43 private labs all over the state, it said.
The number of infected children in the age group 0-12 went up to 4012.
Chief Minister K Palaniswami, while assuring his government was doing its every bit to contain the pandemic, took a dig at DMK chief M K Stalin's statement that the ruling dispensation was not considering his suggestions. The Opposition leader was only issuing political statements, he said.
"I have been giving hundreds of suggestions so far. Though the AIADMK is in power, the DMK has a duty to protect the people," he said in a video message.
Many doctors had interacted with him and he had conveyed their suggestions to the government, the DMK chief said. "But chief minister Palaniswami neither listened to these nor implemented them," he said, adding the CM was 'arrogant' on this matter.
Both cases and deaths were increasing while the CM was insisting there was no community transmission, he said. He squarely blamed Palaniswami for the COVID-19 situation in the state.
Responding to Stalin's remarks, Palaniswami said the opposition leader's daily statements were only "political" in nature. "They (statements) are only political. Is he saying something regarding the pandemic--how to prevent the spread, or how to cure it. Has he said anything," he told reporters in Salem.
The entire government machinery was working in full swing to contain the pandemic, and based on the guidance of WHO, the Centre, ICMR and the panel of experts appointed by it on the matter, he said. The government's proper handling has resulted in lesser fatalities, even as Tamil Nadu fared better in positive to death ratio compared to other states, he said.
"This is due to the government acting on the basis of advice provided by the experts and treatment given by our doctors accordingly," he said, adding a whole lot of frontline workers were engaged in fighting against the virus. Hitting out at Stalin, Palaniswami said the former has made it a 'practice' to criticise the government and the CM "because he only stays indoors." "Where has he gone. He has made occasional visits to show he is reaching out to people. But myself, deputy CM (O Panneerselvam), ministers and all others are doing our best," he added.
The virus was a 'new disease' and even superpowers were struggling to cope with it, he said. On the possible extension of the lockdown in the state, the chief minister said the government will decide on the matter after its discussions with the expert panel on Monday in the state capital.
The government had earlier extended the lockdown in the state till June 30, besides going in for a more intense 12-day one in Chennai and its three neighbouring districts with high case load from June 19.