France manager Didier Deschamps has revealed concerns that his side's final World Cup preparations may have been spied on by a drone hovering over their training camp.

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Les Bleus' buildup for Sunday's World Cup Group E match against Honduras in Porto Alegre, Brazil, at their base in Ribeirao Preto was disturbed by an unmanned aerial vehicle appearing over their heads.

It has not been confirmed to whom the device belonged or who was controlling it at the time, but Deschamps said such practices were becoming more commonplace in football and that world governing body FIFA was looking into the incident.

"Apparently drones are used more and more," Deschamps, a World Cup winner as a player with France in 1998, told a news conference. "It's not up to me. FIFA handles this and has been carrying out an inquiry. We don't want any intrusion into our privacy. It's very hard to fight this these days."