A neo-Nazi who attended a Sydney rally has been detained a day after his visa was cancelled and he is expected to be deported to South Africa.

Matthew Gruter had been in Australia for around three years before the federal government revoked his visa after he was identified as having been at the protest.

At 4am today, Gruter was picked up by Australian Border Force agents from his North Sydney unit.

He is now in the Villawood detention centre awaiting deportation to South Africa after Home Affairs Minister Tony Burke cancelled his visa.

"If you're on a visa, you're a guest in Australia, and if a guest turns up at your home, you've got expectations as to how they'll behave," Burke said.

"If someone turns up for the purpose of just abusing people and wrecking the place and damaging

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