South Australia implements hard border with Greater Melbourne as authorities investigate coronavirus cases

South Australia Police say people from Greater Melbourne will be barred from entering the state from midnight due to new coronavirus cases there.

The changes mean no-one travelling from the Greater Melbourne area will be able to enter South Australia from 12:01am Thursday, unless they have an exemption from SA Health.

SA authorities earlier flagged their intention to close the border, but said they were waiting for further information from the Victorian Government.

SA Police Commissioner Grant Stevens and the…