A 55-year-old man has been arrested after a suspected security breach at Adelaide 's Government House.

Police said a member of the public attempted to gain entry to the state government office through the gates.

When security officers tried to stop him an altercation allegedly unfolded.

Vision from the scene shows multiple police officers and security officers in the area.

Police have not confirmed if the man gained entry into Government House.

A man from Woodville is in police custody and is being interviewed by officers.

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