Senseless vandals rampaged through the youth club at All Saints Church in Tooting after breaking in two weeks ago.
It is thought they forced the door of the building on Franciscan Road, before scattering paper around the car park.
They fled before the caretaker, Tim Gilmore, 49, discovered the mess at 6pm on Thursday, June 25.
He said: “They got into the youth club and vandalized it. It looked like kids.”
To report information on this incident call Crimestoppers on 0800 555 111.
• Get the latest crime figures in our Local Information section
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