The Ukraine Ambassador released a Tweet accusing the Aussie Cossack of having links with Russian Intelligence. My feeling is you don't Tweet information like that. You take it to ASIO. You are an Ambassador from another country, not a journalist. What is he suggesting that the Aussie Cossack's actions are Russian Intelligence-inspired? Based on what exactly? The AFP response of "working with the diplomatic mission" I think is a hint for the Ukraine Ambassador.
You can get a general sense of what is going on from this video.
Federal Police snitch Myroshnychenko - Aussie Cossack
'Aussie Cossack' sought by police over harassment claims by Ukrainian ambassador after pro-Russian YouTuber reveals diplomat's mobile number in prank video stunt
A spokesperson for NSW Police told Daily Mail Australia they are seeking Boikov's arrest after the NSW Parole board revoked his parole licence.
The YouTuber is believed to be in the Russian consulate in Sydney and is reported to have applied for Russian citizenship.
He is also said to have asked for political asylum after he was charged with assaulting an elderly man at a Ukrainian rally in December.
Not sure how this relates to Australian law but it might help with some understanding of the AFP's comment.
https://www.atlys.com/post/difference-between-a-consulate-vs-an-embassy
Topics Include:
What Is The Difference Between An Embassy Vs A Consulate?
What Is A Diplomatic Mission?
What Are The Types Of Diplomatic Missions?
You can think of the embassy as the head office, whereas the consulate is the regional office. Embassies are the main representatives of their home country, whereas consulates are additional diplomatic offices.
Embassies and consulates are considered legal territories of their home countries, meaning that the host country does not have jurisdiction over the embassy of another country.