From Sunday until June 13, gatherings will be limited to two people, and restaurants can only provide delivery or takeout services. Companies will have to make working from home the default for employees who are able to do so.
"This is worrying as it suggests that there may be unknown cases in the community with possible ongoing community transmission and that our earlier and ongoing measures to break the chains of transmissions may be insufficient."Infections not linked to identified cases have risen to 15 in the last week, more than double the week before.
The tightening of restrictions comes before Singapore and Hong Kong are slated to launch their long-delayed air travel bubble on May 26, allowing quarantine-free travel between the cities.