Two police officers have contracted Covid-19, it was revealed last night.A police spokesman said one of the officers tested positive after returning from overseas and the other may have contracted the coronavirus on the island.He added: “Both officers remain under mandatory quarantine and are also being closely monitored by the health authorities. “Additional cleaning of facilities has taken place, with the assistance of a professional cleaning company.”The spokesman said contact tracing for the two had started and officers who had been in contact with them had been tested.He said the police contacts were “awaiting their results, which are expected to be received within the next 24 hours”.The spokesman added: “This should eliminate any further threat to the safety and wellbeing of staff and members of the public.”But he said: “However, out of an abundance of caution, we will continue to closely monitor this situation and apprise the public as necessary on any further developments.”But the spokesman declined to say where the officers worked or how long they had been on the job before they tested positive.The news came as four new Covid-19 cases were reported last night by the health ministry.The cases, three from overseas and one unknown transmission, were among 1,244 results received between Sunday and yesterday — the rest were clear.The three cases, who all had clear pre-departure tests, came in on JetBlue flights from New York over the past ten days.One resident tested positive on arrival at the airport on Saturday.A visitor who arrived last Wednesday was found to have the coronavirus when they had their fourth-day test. Another resident, who flew in on August 7, was found to have the coronavirus on their Day 8 test.The source of the other case is under investigation.All the cases have been isolated and contact tracing has started.It is not known if the two police officers are included in the latest statistics.Kim Wilson, the health minister, said: “It is important to note that two of the new imported cases tested positive after having both a negative pre-departure test and a negative arrival test — one also had a negative Day 4 test.”Three cases of Covid-19 came in on the JetBlue flight from New York last Friday.All were residents who did not have pre-departure tests. They have been isolated and contact tracing started.Ms Wilson said: “I remind people that a Covid-19 test is only a snapshot in time and will not detect the virus at very low levels.“This is why it is so important to follow public health guidance on mask-wearing, hand hygiene and physical-distancing at all times and why it’s so vital that travellers follow their quarantine restrictions as well as the strict return-to-work guidance.” Mr Wilson added: “While Covid-19 is being imported to Bermuda, it is very important for everyone to limit their movements and contact, and to practise mask-wearing and physical-distancing.”The news meant the total number of Covid-19 cases on the island has risen to 166, with nine deaths.A total of 147 have recovered and there are ten active cases, all monitored by public health officials.None are in hospital, but they are being monitored by public health officials.A total of 61 cases have come in from overseas, 85 were on-island transmissions with a known contact and 19 were on-island transmissions with an unknown contact. One case is under investigation.Bermuda’s country status is still “sporadic cases” and the seven-day average of the real-time reproduction number is less than 1.The average age of confirmed cases is 58 and the age range is from 18 to 101.