Postpublished at 18:50 Greenwich Mean Time 15 December 2014
Police have accounted for 17 hostages, two of whom are dead, police say at the press conference.
Australian police have stormed a cafe in Sydney after a prolonged siege in which a gunman took a number of people hostage
Shots have been heard and several hostages have been seen running from the Lindt cafe. Police now say the siege is over
The gunman has been named as Man Haron Monis - a self-proclaimed cleric from Iran
People inside the cafe were earlier forced to hold a black flag with Arabic writing at the window. All times GMT
Yaroslav Lukov, Sally Taft, Alastair Lawson, Jasmine Coleman, Amber Dawson and Thom Poole
Police have accounted for 17 hostages, two of whom are dead, police say at the press conference.
A police statement says that four people were injured in the incident.
The hostage taking stand-off was an isolated incident, police say.
Police say that the dead include a 34-year-old man, a 38-year-old woman and a 50-year-old man who it is thought to be gunman Man Haron Monis.
Australian police say three people were killed and four injured in the siege.
"The decision as to when to go into an operation and use force is a fine balance and its about gain," Henderson Risk Limited CEO Duncan Bullivant told the BBC. "If time is going to give you the gain for a peaceful negotiation, you've got to negotiate. "But if the negotiations, or the people you're negotiating with, seem unstable or you're moving to a point where the people on the ground believe that there is a risk to the hostages then force has to be used".
Two Muslim men performed prayers for peace in the aftermath of the hostage-taking incident near to the cafe where it took place. In a statement, several Muslim groups in Australia criticised the gunman's actions.
ABC News tweets, external: #BREAKING: NSW Police confirm gunman from #SydneySiege is dead
tweets, external: The casualties, unconfirmed: 2 dead, 3 seriously injured, including a police officer
tweets:, external Sending love Sydney. Stay patient..need everybody safe & a peaceful resolution . #illridewithyou
Reports say the New South Wales police are due to hold a news conference shortly. Will bring you all the latest updates and reaction to this fast moving story.
Man Haron Monis has made numerous court appearances in Sydney over the last five years.
A man who was leaving the Lindt cafe in Sydney just as the gunman arrived tells Australia's Daily Telegraph, external about his lucky escape.
Australia's 2EU Radio reporter Leonie Ryan tells the BBC that - according to "well-placed police sources" - the decision to storm the cafe "was completely unplanned". She says: "We're hearing reports that Man Haron Monis actually fired the first shots. Police made the decision to storm into the cafe after hearing gunfire."
Police and emergency services speedily moved into the cafe area shortly after five or six hostages were seen fleeing the building. Loud bangs and shots were also heard.
Who are the radicalised members of Australia's Muslim community and how large is the problem? Here's a 90-second BBC video.
Here's the dramatic footage of police storming the cafe.
The full extent of injuries suffered by those who were held hostage is still not clear.
A hostage and the gunman are believed to have died during the stand-off, media reports say.
Australia's jihadist problem is much bigger than Sydney's hostage crisis, the Washington Post, external says.