Story highlights
- Explosions and gunfire heard as police storm Sydney cafe, ending siege
- Police move in after more hostages escape
- High-profile attack in Sydney's central business district unprecedented
- Streets usually bustling with city workers, tourists and shoppers
Dramatic scenes ended a tense hostage situation early Tuesday in Sydney, with sounds of an explosion and gunfire as Australian police stormed a cafe where a gunman had hours earlier taken more than 10 people hostage.
"The whole moment seemed to begin by the escape by our count of six or seven hostages; they ran out from the right-hand side of the cafe and flew down the steps and into the arms of the waiting police," Channel 7 reporter Chris Reason told CNN.
"At that point there were a couple of minutes of silence, a police unit moved in; we could see them in dark uniforms, night-vision goggles on, looking toward the door. There was a shot fired -- we think that at that point that it was the gunman firing a shot. We heard from one police officer saying that a hostage was down and at that point the police moved in," Reason said.
"We saw a lot of explosive material -- flash bangs as they're called, stun grenades to try to disrupt and startle the gunman as police units moved in from both sides of the cafe to try to get him before he could do any further damage."
Live footage from the scene later showed heavily armed police running toward the Lindt Chocolate Cafe before at least four people were carried away on stretchers.
Channel 7 reporter Sean Berry said the scene had been quiet for several hours before police swarmed the area.
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Firefight occurs during hostage crisis 01:25
Anatomy of the deadly Sydney siege 01:57
"All of a sudden, gunfire, heavily armed police officers -- police en masse -- and those hostages (were) beginning to be brought out," he said.
On any ordinary workday, the scene in Sydney would have been packed with people crisscrossing Martin Place on their way to work, home and shops.
But this week before Christmas, the inner-city streets fell silent.
"It is eerily quiet for the center of the city, which is normally humming with traffic and pedestrians. ... People would be normally walking the streets. They've roped off several blocks around Martin Place," said CNN's Anna Coren, who was about a block from the scene.
Martin Place is a paved traffic-free zone, a pedestrian-friendly promenade a few blocks from the ferry terminal at Sydney Harbor. It's where people go to meet, have coffee and catch a train.
Heavily armed police
Outside the Lindt shop, heavily armed police, some in camouflage gear and armed with sniper rifles, had taken positions as negotiators attempted to talk to the man inside, since identified as Man Haron Monis, also known as Sheikh Haron, a self-styled Muslim cleric.
Passers-by were herded back behind police barriers, while surrounding buildings were evacuated.
Opposite the Lindt shop is the entrance to the Martin Place underground train station, where trains stopped running during the siege.
Beyond the train station are the studios of Australian network Channel 7, whose huge glass windows act as the backdrop for early-morning programming, and where crowds are encouraged to gather.
In the early hours of the standoff, the network, a CNN affiliate, turned its cameras around to film across the street. It captured the images that Channel 7 producer Patrick Byrne described as "shocking and chilling."
"People were putting their hands up against the panes of glass at the cafe. This was just extraordinary," Byrne told the Australian Broadcasting Corp.
Moments later a black flag bearing white Islamic writing was pressed against the window, drawing gasps from the newsroom, he said.
Hostage situation inside a Sydney cafe 02:27
Abbott: Incident disturbing, terrifying 03:44
Police: 'We are being tested today' 03:36
"We've shut off the monitors that face onto Martin Place for fear that people inside the cafe might be able to see the pictures broadcast," Byrne said at the time.
'Surreal' scene
Few live images of the cafe were broadcast amid police warnings not to disclose operational matters.
Macquarie Radio Network reporter Glenn Wheeler described the scene as "very surreal."
"There are literally hundreds or thousands of people wandering around with this expression of bewilderment," he told 2GB radio station. "We can't believe this is happening."
He said hundreds, if not thousands, of people had assembled in nearby Hyde Park after being told to leave the area around Martin Place.
Wheeler recounted a conversation he had with two German tourists who said, "We thought Sydney was safe."
It was a sentiment that was apparent in the street and on social media.
While Australia's operating under a "high" terror alert, a high-profile attack in Sydney's central business district was unexpected and unprecedented.
Authorities are not explicitly referring to the incident as a "terror attack," but New South Wales Police Commissioner Andrew Scipione said police are on "a footing that would be consistent with a terrorist alert."
Sydney residents expressed their shock and dismay.
"It's probably the first time in Australian history that something this major in regards to a terrorist threat has happened," Joshua Martin told Reuters.
'High' terror alert
The hostage situation follows dozens of police terror raids in the city that have strained relations with the local Muslim community.
Amid reports that as many as 100 Australians had left the country to support ISIS' quest to create a so-called Islamic State, authorities introduced tough new terror laws.
The new regulations give authorities the power to imprison people for "advocating terrorism." They also criminalize travel to areas deemed by Australia's foreign minister as "no-go" zones, and impose stiff penalties for Australian citizens who leave the country to engage in foreign wars.
In September, Prime Minister Tony Abbott raised the country's terror threat level to "high" but said there had been "no specific intelligence of particular plots."
"What we do have is intelligence that there are people with the intent and capability to mount attacks," Abbott said. A week later, he announced a terror plot to decapitate members of the public had been foiled.
