Precautionary measures being taken included trip cancellations and the closure of several Jewish institutions, as the crisis unfolded.
The Community Security Group, which coordinates security and emergency arrangements for Australian Jewry, told residents to be on high alert and to report any suspicious activity or objects.
“The fact that someone has perpetrated an event like this, it has caused a heightened level of vigilance for our community,” said Steve Lieblich, Director of Public Affairs at the Jewish Community Council of Western Australia. “We are on level 5 of 6 alert levels.”
The perpetrator asked for an ISIS flag but was given a black flag with standard wording of the declaration of the Muslim faith.