Over 500 novel coronavirus cases have been reported in the past 24 hours, taking the total number of cases past the 3,500 mark, the Health Ministry said on Sunday evening. At least 83 deaths have been linked to the COVID-19 virus and 275 people have been discharged after receiving treatment. On Friday India recorded the highest number of fresh cases (601) and deaths (12) amid a surge linked to a controversial religious gathering in Delhi. More than 1,000 people who attended the religious held by Islamic group Tablighi Jamaat in Delhi last month have tested positive, the government said on Saturday. Millions switched off lights and lit diyas (earthen lamps) and candles, burst firecrackers, chanted slogans and shouted and cheered from their balconies Sunday night, following Prime Minister Narendra Modi's call to "challenge the darkness spread by the coronavirus crisis".