The Singapore Civil Defence Force (SCDF) says the 10 injured workers, including another three Chinese workers and seven Bangladeshi workers, were taken to Changi General Hospital (CGH) for treatment.
The ministry says items such as identification cards, mobile phones, name lists of workers, bank transaction receipts, Singpass tokens and employment documents were seized during the operation.
Successful applicants for this year's NDP and the two preview shows may collect their tickets from Jul 7 to Jul 9 and Jul 14 to Jul 16 between 10 am and 9 pm.