It appears ISIS affiliates have taken several hostages in downtown Sydney, estimated at 12 hostages. The hostage taker/s have displayed a black flag. Still not sure if it's a coordinated attack or if it's a "lone wolf" situation. Either way, they're starting to make bold some moves.
http://abcnews.go.com/International/...ry?id=27595637
EDIT:
Just saw this has been posted somewhere else. Feel free to take it down, sorry about that.