Video analysts responsible for preparing data and tactical information for team coaches were not impacted as they were at Switzerland's base camp in Stuttgart, a spokesperson for the team said, confirming three laptops were taken.

Those affected were part of a delegation of junior national team coaches who were travelling across Germany to observe and analyse matches.

"No sensitive data or no information about the upcoming match against Italy has been lost," the official said in an email.

Switzerland have reached the knockout stages of their sixth successive major tournament and play Italy in Berlin on Saturday.