Guernsey has been banned after the discovery of four new cases of coronavirus, the island’s government said.
Guernsey states said in a statement it was unclear how those affected contracted the disease, as none came from travel or contact with known cases.
“Contact tracing continues to determine whether there is a link between cases and whether those cases are linked or if this is due to broader community seeding,” the statement said.
The move comes after the island has been free of coronavirus restrictions since early June.
Under the latest measures, islanders have been told to stay home from Saturday lunchtime, except for important shopping, medical care or up to two hours of outdoor exercise.
Shops and restaurants that are not absolutely essential must be closed, including for deliveries and take-away.
Schools will also be closed, with the exception of children from key workers or from vulnerable families.