From Reddit:
At least 2 gunmen, suspected more right now. (unconfirmed if they have guns, however) [00:00 GMT]
The gunmen forced 2 female hostages to press themselves against the glass window of the cafe while holding up a black Islamic flag that resembles the generic black standard used by extremist groups, including ISIS back in 2007. This is NOT the same flag as the ISIS flag. [00:02 GMT]
There are at least 13 hostages right now, possibly more. [00:04 GMT]
Airspace over Sydney reserved for military/police, other traffic diverted (confirmed) [00:09 GMT]
Reports of threats made against other places in Sydney according to ABC24 (CONFIRMED). [00:14GMT]
Reports that one of the gunmen is wearing a backpack and some sort of a vest. (unconfirmed) [00:24 GMT]
Suspicious package at Sydney opera house, building fully evacuated (unconfirmed). [00:25 GMT]
Gunmen have made demands on live radio to speak to the Australian Prime Minister. [00:30 GMT]
A middle-aged looking gunman has been witnessed through the window by ABC24 [00:39 GMT] (unconfirmed).
Possibly a second gunman witnessed through the window wearing a black headband with white writing in Arabic on it (unconfirmed) [00:42 GMT]
Australian PM's office releases message that the national security cabinet is holding an emergency meeting (hostage crisis confirmed), possibly Australian military response. [00:42 GMT]
Sydney harbor bridge closed down (confirmed by Channel 7 news) [00:51 GMT]
2 gunmen confirmed by unidentified Lindt chocolate cafe employee who managed to escape [00:54 GMT]
Hostages being held in 2 different groups according to unidentified Lindt chocolate cafe employee who managed to escape [00:55 GMT]
Channel7 news reporting that an individual walked into a Sydney hospital with a suspicious package, and then disappeared and is currently missing. [00:57 GMT]
CEO of Lindt Australia now saying that there are currently 40-50 hostages being held (unconfirmed) [00:58 GMT]
PM Tony Abbott holding press conference. [1:55 GMT]
http://www.reddit.com/r/worldnews/co..._martin_place/