The tweet from the Derby Response Unit of Derbyshire Constabulary read: "Officers have just attended the Training Ground for @dcfcofficial after a suspicious male was seen at the perimeter fence.

"Excellent searching conducted and male was located. All checks above board!

"Keeping the team safe to bring home a win against #LUFC on 11th! #SpyingIsCheating."

The Rams take on league leaders Leeds on Friday night at Elland Road.

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