Officials said the suspected leak occurred in the swimming pool plant room.
They described the decision to close the entire facility was a “precautionary measure”, adding that “no staff or customers have been adversely affected”.
“We’re sorry for any inconvenience this causes, and cannot say how long it will take to resolve it,” a spokesperson added.
Pictured: The entire sports centre has been closed until further notice.
An inspection is now being carried out, and more information is expected to be provided later this evening.
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