THIRUVANANTHAPURAM: As many as 12 Covid-19 cases, the highest in Kerala so far in a day, were reported in the state on Friday. With this, the total number of novel coronavirus cases reported in the state has gone up to 40, including the three patients discharged from hospitals earlier.The state government has decided to go for week-long restrictions in Kasaragod in view of a viral outbreak threat in the district. All government offices in the district will be shut for a week while all places of worship have been asked to shut for two weeks. Shops and establishments, including hotels, will function only from 11am to 5pm for a week. Clubs and other places where people gather will also remain closed for two weeks.CM Pinarayi Vijayan told reporters that a person, who came from Dubai and tested positive for the virus on Tuesday, had become a major source of the spread of disease there. Four of the six cases reported in the district on Friday are his relatives, including two women and a two-year-old girl.