The remaining six of the group were then shifted to IRT Perundurai Medical College near Erode. They were screened for Coronavirus on 17 March and on Saturday, the tests reported positive for Covid-19.

In view of the positive Covid-19 cases, both the mosques have been asked to shut, while the Tamil Nadu Health Department has approached the Railways seeking information on passengers who travelled in the coach of the Thai nationals.

Tamil Nadu is the second state where Islamic preachers, who have come from South-East Asia, have tested positive for Covid-19. Last week, nine Indonesian Islamic preachers of Tabligh Jamaat tested positive for the pandemic virus in Telangana.

The Indonesian preachers, too, travelled by train from Bhopal after landing in Delhi on 9 March.

A congregation of the Tabligh Jamaat in Malaysia has turned hotspot for Coronavirus in South-East Asia, with two-thirds of the positive cases from the mosque where the meeting was held.

On 18 March, thousands of Tabligh Jamaat followers across Asia gathered at Jakarata in Indonesia despite fears that the congregation could fuel the pandemic virus.

Tablighi Jamaat, which means the Society for Spreading Faith, originated from Mewat in Haryana in 1926.

The preachers from Indonesia and Thailand have come to India to teach Muslims at mosques they have chosen about Quran and religious practice as was done during Muhammad’s time.

The mosques where these preachers head to is picked by a draw of lots.

On social media, a demand to check all Tabligh Jamaat mosques has been raised, especially since the Jamaat preachers go all over to teach.

In particular, the Coronavirus positive cases in Telangana and Tamil Nadu have led to the demand to tighten vigil on Nizamuddin Markas or Banglewali Masjid in Delhi.