New South Wales Police say inquiries took place "following a report of inappropriate content being shared".
Four members of the so-called Gang Suppression Force have been missing since Sunday.
Many view it as one of the most pivotal elections in Israel's history, with global implications.
It is the latest in a series of attacks by the Houthi movement which have targeted airports and other sites in the kingdom.
The aid workers from Switzerland and Austria are due to fly home on Thursday, reports say.
Bukangi the shark became an unlikely sensation after it was spotted in a canal in Busan weeks ago.
Governments and companies are scrambling to protect their websites, as Amazon says it experienced attacks before the warning was made public.
Disaffection has often driven down turnout among Arab Israelis, but there is a strong push to get rid of the right-wing governing coalition.
Starbucks says it is improving customers' in-store experience as it competes with homegrown rivals.