Thousands of people have crossed the state border from Victoria in a mad rush before the state’s eastern borders shut indefinitely.

More than 3,000 people have entered the state over the last three days, 7News reports.

Premier Steven Marshall announced on Friday that a previous exemption allowing SA residents to enter the state from Victoria would no longer apply.

3,017 people have entered the state since the announcement on Friday afternoon.

Returning residents will now be forced to self-isolate for 14 days upon their return.

The rules come into effect at 11:59pm tonight, a day after Victoria recorded a record increase in the number of confirmed, new COVID-19 cases.

The state recorded 532 cases on Monday. According to Premier Steven Marshall, about 95 per cent of new South Australian cases in the past two weeks have come from Victoria.