Singapore has become the first Asian nation to receive a batch of Pfizer-BioNTech's COVID-19 vaccine, ahead of a rollout in the city-state that health officials have said could be as soon as two weeks away.
Singapore Airlines, which carried the vaccines on board one of its freighters from Belgium, did not specify the size of the batch.
Singapore announced last week that it had approved the companies' vaccine.
Prime Minister Lee Hsien Loong, 68, has said he will be among the early recipients of the vaccine in the nation of 5.7 million people, which has one of the lowest coronavirus fatality rates globally.
"Delighted to see the first shipment of vaccines arrive in Singapore," Lee posted on Facebook on Monday.
The government plans to first administer the vaccine to healthcare workers and the elderly.
Health ministry official Kenneth Mak last week said the first jabs could be given "within the next two to three weeks" if safely delivered.
Singapore has kept new local infections to almost zero each day in recent months and will further ease restrictions next week.
It has signed advanced purchase agreements and made early down-payments on several vaccine candidates including those being developed by Moderna and Sinovac.
Most of the city-state's more than 58,000 coronavirus cases occurred in cramped migrant worker dormitories, but there are some concerns about asymptomatic carriers and undetected transmission taking place.
The government said on Saturday it was investigating whether 13 travellers who tested positive at a five-star hotel in November may have been infected there during their mandatory quarantine, rather than prior to their arrival in the country.