Singapore has confirmed its first case of the new coronavirus variant found in the United Kingdom, the city-state said, while 11 others who were already in quarantine had returned preliminarily positive results for the new strain.

All the cases, which were imported from Europe, had been placed in 14-day quarantine at dedicated facilities or isolated upon arrival, and their close contacts had been quarantined earlier, Reuters reported.

“There is currently no evidence that the B117 strain is circulating in the community,” Singapore’s health ministry said, referring to the new, potentially more infectious UK strain.