Trading has been suspended on the Australian share market and operator ASX is investigating what it's described as market data issues.
The Australian Securities Exchange stopped trading at 1024 AEDT on Monday after the main index had already risen by more than one per cent.
Equity market transactions were paused and an investigation was underway, an ASX spokesman confirmed.
The ASX has apologised for the disruption and is working to rectify the issue as soon as possible.
Hacking is not believed to be the cause.
The ASX200 was up 79.07 points, or 1.23 per cent, as 6484.3 when trading was suspended.
All sectors were higher except for information technology. Property was best, higher by 1.92 per cent.
Investors will be given 30 minutes notice before trade resumes.
