Five Australian soccer fans were among nine people tied up and robbed at gunpoint in a terrifying hold-up in their hotel room following the Australia-Serbia World Cup match in South Africa.

The Nine Network said that one of the female victims was sexually assaulted during the robbery, staged by four armed men at the hotel in Nelspruit.

They were found by another Australian guest, Steve Gaynor, who told Nine that one of the victims, believed to be a member of the Australian Federal Police, had kept the others calm during the nightmare ordeal on Thursday.

Mr Gaynor had found his room had been robbed with about $A10,000 worth of equipment, including his laptop and passport, stolen.

The Department of Foreign Affairs and Trade had confirmed the incident, News Limited reported.

The robbery and assault occurred after the group had returned in the early hours of Thursday morning after watching the Socceroos beat Serbia 2-1.

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