The owners of sports clubs in Guernsey are being advised to check on their security after break-ins at three clubs in recent weeks.
Money and alcohol was stolen from three football clubhouses belonging to Belgrave Wanderers, Northerners and Rovers.
In each case, thieves entered through insecure doors and windows.
Andy Goodall, from Guernsey Police, said there were simple steps clubs could take to boost security.
He said: "Be cautious of leaving large amounts of cash unattended overnight. There are ample banking night safe facilities. Please make use of them.
"On the premises themselves, ideally leave the till open. On at least two of the occasions, the tills have been smashed open. These are expensive items to replace and if it's obvious there is no cash in them they're unlikely to be a target."