STONE-throwing yobs caused £20,000 worth of damage when they smashed 14 windows and a front door at the Civic Hall and Impulse Leisure Centre in Grays.
They struck at the Blackshots Lane venue at 12.30am on Sunday October 12.
The vandals caused the damage by throwing stones and kicking and police are now reviewing CCTV appealing for information.
Any witnesses to the crime should contact Grays Police on 0300 333 4444.
Impulse Leisure spokesman, Ben Leeson, said: "It's really disappointing having to deal with issues such as this, it’s pure mindless vandalism."
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