US President Donald Trump has ordered that flags across the country be flown at half-staff to honour Supreme Court Justice Ruth Bader Ginsburg, who died of pancreatic cancer at the age of 87.

As part of the order contained in a presidential proclamation released late Friday by the White House, flags will be flown at half-staff at the White House and all public buildings and grounds, military bases, naval stations and overseas diplomatic facilities until Ginsburg is laid to rest, reports Xinhua news agency.