Police talk as they guard a house that was involved in pre-dawn raids in western Sydney
Police talk as they guard a house that was involved in pre-dawn raids in western Sydney September 18, 2014. Intelligence "chatter" has revealed that militants plan to attack Australian politicians and government buildings, the prime minister said on Friday, a day after hundreds of police carried out a sweeping counter-terrorism operation. Prime Minister Tony Abbott said he had ordered security boosted at Parliament House in Canberra, amid mounting concerns over the possibility of attacks by Australians radicalised in Iraq or Syria. More than 800 police were involved in the security operation in Sydney and Brisbane on Thursday, which authorities said had thwarted a plot by militants linked to the Islamic State group to behead a random member of the public. Picture taken September 18, 2014. REUTERS/David Gray

SERT police officers shot a gunman during a stand-off in Brisbane.

The gunman passed away after he had been shot by the officers. He confined himself in a car while he was armed with a gun. He remained in Gannet Street since 12 noon on Monday as the officers approached there for conducting an enquiry on an issue, ABC News reported. When the officer approached the place, the gunman flashed his gun. An emergency was declared in the area, surrounded by Wirraway, Partridge, Parakeet, Brolga, Clipper, Comorant, Kittyhawk streets and Inala Avenue.

The officers reportedly approached the area for a "drug deal gone wrong'' case. Courier Mail reported that it was a four-hour siege which finally resulted in shooting the gunman. The SERT officers used BearCat vehicle for cover, which was heavily armoured. They managed to keep the gunman inside his car. He was confined to the front seat of the vehicle. While police negotiators tried negotiating with the gunman, the attempts failed when he went out of the car. He pointed his gun at the officers, and that was when the officers had to shoot at him. The shooting was captured on live camera by television helicopters. The shooting of the incident is, however, now being under radar of an internal Ethical Standards Command investigation.

Everything seemed quitter for a long time. Then the gunman got out of his car all of a sudden. The negotiators kept trying to strike a deal with the gun throughout the afternoon over the telephone. They used a telephone which they had provided to the gunman for negotiation. At around 4 pm, the gunman suddenly got out of the car. The officers appeared to have shot multiple shots at the gunman. Even though CPR was performed on the injured man by paramedics, he passed away.

According to Inspector Richard Kroon, the Ethical Standards Command officers were on scene. They will complete an investigation and refer the matter to the state coroner," Kroon said. "We were hopeful that this would be a peaceful resolution. That's what we always strive to achieve and unfortunately this matter hasn't turned out that way."

Contact the writer: s.mukhopadhyay@ibtimes.com.au