Police are investigating a fire that destroyed a tennis club building at Thirroul over night.
Firefighters were called to the Railway Tennis Club on Station street at 11.15pm after reports that the building was well alight.
NSW Fire Brigade units from Thirroul and Bulli fought the blaze for about an hour, however the building - measuring 7m by by 4m - was destroyed.
Detectives are investigating the cause of the blaze.
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