8:24AM BST 26 Sep 2012
The European champions announced police had been informed after it emerged some of their academy players had possessions stolen from their dressing room.
It is understood that six wallets, nine mobile phones and several watches were among the items that were stolen.
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"The matter is currently being investigated by the police.
"CCTV footage is being handed to them and confirms the thefts were carried out by a lone intruder not connected with the training ground site.
"Other local premises near to the training ground were targeted that day and may be connected. Nobody at Chelsea FC is under suspicion."
The theft is the latest incident at Chelsea's training ground to hit the headlines in the last year.
A knife was found in their academy dressing room earlier this year with the club claiming it had been mislaid by a workman.
Academy player Jacob Mellis also left the club after letting off a smoke bomb at the training ground.
