Norway will tighten restrictions on gatherings and foreign workers entering the country after a rise in coronavirus infections, Reuters quoted Prime Minister Erna Solberg as saying on Monday.

Cases are up across large parts of the Northern Hemisphere and authorities have also reported increases in Oslo and other parts of Norway which has long had one of Europe's lowest rate of infections.

“We need to do more to control the spread of the infection,” Solberg told a news conference.

Indoor public gatherings will be limited to 50 people, down from 200, and people will be only be able to invite up to five guests to their house, down from having 20 gathered in one home.