Anyone who was at the bowling centre between 11am and 3pm on June 27, or the club between 11pm and 1am on July 4, is being urged to self-isolate and get tested.
Hundreds of NSW residents have already been forced into 14-day isolation after an alleged cluster of cases centred around the Crossroads Hotel at Casula.
Fears of a spike in Covid-19 cases
Motorists queue for Covid-19 testing in Roselands, with fears of a spike in community transmitted cases hitting Zone Bowling Villawood and Canterbury League Club after recent visits by someone who tested positive for the virus.