Guernsey will go into lockdown with immediate effect and islanders are being asked to stay at home.
It follows confirmation of four new positive cases of Covid-19 where it is not immediately clear how they contracted the virus, as none are directly from travel or the contacts of known cases or travellers.
Contact tracing is continuing to determine whether there is a link between the cases, and whether these cases are linked or this is as a result of wider community seeding.
Officials say a sharp and strict lockdown offers the island the best chance of getting back to normality as quickly as possible.
The lockdown will be reviewed in two weeks.
People should stay at home unless they are seeking medical care, carrying out essential shopping for food or supplies or for up to two-hours exercise outdoors, with other members of their households unless they live alone in which case they can exercise with one member of another household while socially distanced.
If you can work from home, then work from home.
Those who cannot work from home can only go to work if they are essential workers.
Events and gatherings should be immediately cancelled.
Care homes and the hospital are being instructed not to allow any visitors as of now, end of life visits will be considered.
All islanders are advised to adopt social distancing measures.
Schools, colleges and early years providers (pre-school, nurseries and childminders) will close except for vulnerable students and children of essential workers.
Restaurants and non-essential retail are not being treated as essential and should not open, even for deliveries or takeaways.
All elective surgery has been postponed next week and forthcoming weeks will be reviewed on Monday.
Any emergency surgery will continue as required.
Guernsey’s Director of Public Health is also advising islanders to wear masks and practice social distancing to help reduce the spread coronavirus.
Another live briefing will be held tomorrow (24 January) at midday.