Danish team officials discovered two Chinese men behind a two-way mirror filming a technical meeting between some of their staff only a day before their opening encounter against China.

New Zealand Football officials at the FIFA Women's World Cup have tried to play down fears over security following the incident at the Wuhan hotel where the Football Ferns and all three of their Group D opponents are staying.

But they admit they have no idea who is behind the spy attempts.

New Zealand team management have stressed there has been no reason to believe any of their equipment, information or personnel are under any threat.

"Security from the hotel, the local organising committee, and FIFA has been high and while we remain vigilant, we believe there is no immediate need for concern," said Rob Sherman, Head of the New Zealand Delegation.

It is not clear yet who the two men were working for and Denmark Coach Kenneth-Moller was quick to play down rumours of Chinese involvement.

"I will say that there have been some matters that we have reported to FIFA, but I can assure that there is no accusation whatsoever against China or [China's Swedish Coach Marika Domanski-Lyfors]," said Heiner-Moller.

"I won't comment on [who it might have been], I really don't know."

The discovery came after disruptions to recent Danish training sessions including sprinklers at one closed practice, and two men with large cameras at another, putting the sessions under increased scrutiny.

"We've had some problems at some different times here in Wuhan. I think that our preparations have been disrupted and there have been some people at our closed sessions," added Heiner Moller.