Sydney? Seriously?

I have to say that if terrorists were going to make an attack, Sydney, Australia would be the last place that I would expect:

At least one gunman is holding staff and customers hostage at a cafe in the Australian city of Sydney.

Hundreds of armed police have sealed off the normally busy Martin Place in the central business district.

Earlier, at least three people were seen inside the Lindt cafe with their hands up against a window, and holding up a black flag with Arabic writing.

Australian Prime Minister Tony Abbott has described the "terrifying" incident as "deeply concerning".

It is not yet confirmed as a terrorist attack, though the fact that the hostage takers appeared to have displayed the black Jihadi flag would imply that this is likely.

It's just plain weird.