many as 75 new cases of Covid-19 have been reported in Tamil Nadu, with 74 of them being traced to the Tablighi Jamaat congregation held in Delhi's Nizamuddin area in March.

All 74 of them who tested positive for coronavirus are connected to the Delhi event, with one of them being a contact of an attendee in Chennai. This takes the total number of Covid-19 positive cases in the state to 309.

The Centre on Thursday said that at least 400 people who attended the Tablighi Jamaat event in Delhi have tested positive for novel coronavirus.

"We were informed about Tablighi Jamaat congregation's link to Covid-19 cases by Telangana. Since then we have carried out an intensive contact tracing and sampling process in the states where the attendees of this event had travelled to. So far, at least 400 positive cases have been identified from these states, which are linked with the Nizammudin Markaz cluster," Lav Aggarwal, joint secretary, Union health ministry said.

The health ministry official said additional testing underway may further add to the number of cases linked to this cluster.

"As per the information available so far, Tamil Nadu has reported 173 positive cases, Rajasthan 11, Andman Nicobar nine, Delhi 47, Puducherry 2, Jammu and Kashmir 22, Telangana 33, Andhra Pradesh 67 and Assam has reported 16 cases of novel coronavirus among people who attended Tablighi Jamaat event in Delhi," the health ministry official told media.

About 9,000 Tablighi Jamaat members and their primary contacts have been quarantined till now across the country in view of the coronavirus infection, a senior home ministry official said on Thursday.