A Portuguese photographer was held up at gunpoint early on Wednesday and two other journalists were also robbed at the same World Cup hotel.

Antonio Simoes said he woke around 4am and found two men entering his room at the Nutbush Boma Lodge outside of Magaliesburg, 120 kilometres northwest of Johannesburg.

"One of the guys pointed a hand gun at my head, and then they took all my gear - cameras, lenses, laptop," said Simoes, who works for the Portuguese daily O Jogo.

"Then they told me to lie on the bed and they covered me with a blanket, pressed the gun against my head and told me to sleep.

"The whole thing took one or two minutes, but it felt like hours."

Simoes said the three cameras and gear the thieves stole was worth about 30,000 euros ($A44,192). They also took 3500 euros ($A5,155) in cash as well as his passport and a pair of jeans.

The photographer said he stayed in bed for a while after being robbed, too scared to move and worrying about what was happening in the other rooms.

Spanish journalist Miguel Serrano, who works for the Spanish sports newspaper Marca, and Rui Gustavo Morais were also robbed but they slept through it. The three were sharing a three-bedroom lodge.

Lt Colonel Leon Engelbrecht of the South African Police Service confirmed that police were looking for two suspects but would not say whether any arrests had been made. Serrano said police had told him one suspect had already been arrested.

"Two of the journalists slept through the robbery but one was awake," Engelbrecht said.

"This is obviously high-profile, so we have to make sure we are on top of this. We are still waiting for detailed information from the scene."

The remote four-star lodge is 15 kilometres from the Portugal team's base.

Police had cordoned off the hotel and conducted fingerprint tests in the rooms.

Serrano said about 20 journalists covering the Portugal team are staying at the Nutbush, and that they had previously raised concerns about hotel safety.

"We had already complained to the Portuguese federation that the security left a lot to be desired," Serrano said, "but we never thought that something like this would happen."

Serrano said he slept while his room was cleared out by the thieves, who took a laptop computer, a mobile phone and more than $US3000 ($A3707) in cash - in both Euros and South African rand.

"They took everything except my dirty clothes and my World Cup accreditation," he said.

Hotel officials said they would not comment on the incident.

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