The venue was evacuated around 5am on Sunday morning.
South Australia Police are investigating if flooding at a popular Adelaide nightclub was deliberately caused at the weekend.
Patrons at the Fat Controller nightclub were forced to evacuate around 5am on Sunday morning after a water pipe was damaged and caused the venue to flood, according to ABC.
One patron has said the water was "almost a foot (deep)" and it's been reported that the flooding also spread to a nearby underpass.
Police are urging witnesses to contact Crime Stoppers to assist their investigation.
"Police are investigating how a city nightclub became flooded in the early hours of the morning," said a statement to SA Police's Facebook page.
"Just after 5am, police and emergency services were called to licensed premises on North Terrace after reports of minor flooding.
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"All patrons were evacuated safely and no injuries were reported. The flooding spread to the nearby underpass that commuters use to get from Adelaide Railway Station to the Station Arcade.
"Police investigating believe a water pipe was deliberately damaged by a patron in the nightclub, and are working with the venue to obtain CCTV to identify the person responsible for this act."
In the three years since its opening, Fat Controller has become a much-loved live music venue and has played host to acts including The Temper Trap, Cub Sport, Ball Park Music, Tkay Maidza, Japandroids and more.
The Music has contacted Fat Controller management for comment.