Police warned that anyone breaching shelter-at-home rules would be dealt with after people under quarantine invited friends on social media to visit them at the centre where 123 people are being held in strict isolation for 14 days.People brought back to the island from overseas have to undergo an isolation period to limit the risk of spread of coronavirus infection.The police said it was aware of “social-media messages circulating, regarding individuals who are being quarantined” that were “encouraging friends to come and visit”.The police notice added: “This kind of behaviour will not be tolerated.”Many of the island’s 39 confirmed cases of Covid-19 were people who had travelled back to the island from the United States or Britain.Some of the online messages from quarantined people also gave away the location where returnees are held, which the Government had kept secret for security reasons.Wayne Caines, the Minister of National Security, said yesterday it was “disappointing” to see the messages.But he added: “Let’s not talk about exceptions to the rule.“The majority of people in government quarantine facilities have governed themselves with discipline and aplomb and have followed the rules.”The news came after Commissioner of Police Stephen Corbishley on Monday condemned “ridiculous” excuses given to officers at checkpoints set up to make sure people had a good reason for being away from home during the lockdown.People in quarantine have also complained about the standard of food.One student said meals were delivered cold and there was no way to heat them up.She added: “I am very grateful to have made it back on the island — however, life in quarantine has not been sweet at all.”She added: “At this point in time, I wish that I could self-quarantine in the comfort of my own home and be fed like a decent human being.”The student complained there was also no provision for exercise. She explained: “We are confined to our rooms — the most we can do is go out on our balconies.”Mr Caines admitted the food available would not be to “everyone’s specific fancy”.But he acknowledged some of the people under quarantine had special dietary requirements.Mr Caines added that the Government would unveil plans today for families to “get key goods” to relatives in quarantine.