South Australia's top cop has ordered a review of the City Watch House's shower facilities after video emerged of a convicted paedophile being bashed by a notorious bikie.

The video, taken in the Adelaide City Watch House, was posted to the social media account of Rebels gang member Bradley Daniele on Monday.

Watch the video above

It shows Daniele entering the man's shower block and brutally assaulting the prisoner, repeatedly landing blows to his face and body.

"1 thing I will not stand for is kids being abused physically or mentally and I will (sic) do this over and over again if I had the chance," he wrote on Facebook.

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"I think it's time people stopped judging bikies and people start to worry about the real issues in life like getting pedos (sic) off the street."

Daniele was subdued with capsicum spray and the victim did not require medical treatment.

Police have confirmed the incident took place in April and Daniele is expected to face court.

'Not here to spread violence'

The video received hundreds of comments from the public on Facebook, prompting Daniele on Tuesday to thank them for their support.

"I'm not here to spread violence or promote anything bad," he said.

"I'm only trying to spread the word about making the streets safe so kids can go to the playground without having to be scared of bad things happening."

In a statement, police said as a result of the incident, security measures at the watchhouse were being reviewed.