Singapore reported a record 142 new cases of Covid-19 yesterday, including a 32-year-old Indian national who was confirmed to have the virus after he died.

The cause of death of the man is being investigated.

The Ministry of Health (MOH) said that he had been swabbed at the National Centre for Infectious Diseases on Tuesday and advised to stay home to wait for the test results. His chest X-ray indicated he did not have pneumonia.

But the man died at home yesterday, with his test results coming out positive after his death.

The new one-day high in reported cases once again included a large number of foreign workers living in dormitories. A total of 40 cases announced yesterday are linked to clusters at dormitories.

While no new patient clusters were reported, the existing cluster at S11 Dormitory @ Punggol added 20 more cases. It now has 118 cases - the largest cluster here so far.

Four more cases have been linked to Westlite Toh Guan dormitory, which now has 38 cases, while five more cases are linked to Toh Guan Dormitory, which now has 23 cases.

Both dormitories are located in the Jurong East area and, along with S11 Dormitory, have been gazetted as isolation areas. This means workers will be quarantined in their rooms for 14 days.

The Sungei Tengah Lodge cluster in Old Choa Chu Kang Road added 11 more cases for a total of 29. Other clusters at dormitories - Tampines Dormitory, Cochrane Lodge I, Cochrane Lodge II, Kranji Lodge and Sungei Kadut - also had more patients linked to them, adding one to four new cases.

In total, there are active clusters at nine different dormitories.

Among yesterday's local cases, links to existing clusters have been established for 55 cases, and 13 cases have been linked to other cases. But around half, or 72 cases, are currently unlinked to other cases or to travel.

Yesterday, the Early Childhood Development Agency said My First Skool in Ang Mo Kio Avenue 10 will be closed from today to April 18 to be disinfected after one of its teachers tested positive. She was last in the centre last Saturday.

The centre was only partially open for parents working in essential services and unable to get other care arrangements for their children.

There was also a new case in the public health sector - a 31-year-old Indian national who works as a technician at Ng Teng Fong General Hospital. Only two of the new cases are imported. Yesterday's numbers bring the total number of cases in Singapore to 1,623.

MOH also said that 29 patients were discharged yesterday. To date, a total of 406 cases have fully recovered from the infection and have been discharged from hospitals or community isolation facilities.

Of the 669 confirmed cases still in hospital, most are stable or improving, with 29 in critical condition in the intensive care unit.

Another 542 people who are clinically well but still test positive are isolated and cared for at other facilities.

Six people have died from complications due to Covid-19 infection.