Rogers said it was the worst possible decision to take someone's life but the action taken warranted the circumstances.
The man, a 34-year-old, had continued to display erratic and aggressive behaviour before coming out and pointing the weapon at police.
She said it was a terrifying ordeal for everyone involved, including those in the neighbouring house.
Several people were inside when an initial shot was fired by the gunman through a window. No one was harmed.
The gunman was shot three times, with police and paramedics immediately administering first aid at the scene.
However, he died in hospital around 10.30pm, she said.
A post-mortem was underway this morning and relatives of the dead man both here and overseas were being contacted.
There would now also be an increased police presence in the community to reassure everyone.
The incident unfolded at 5.47pm, when police were called to the address after a shot was fired through a window of a house.
A member of the public said they could see a man with a firearm.
Police, including the Armed Offenders Squad and the Eagle helicopter, responded and cordons were put in place.
Rogers said police tried to make attempts to negotiate with the man in order resolve the matter safely.
But around 8.24pm, the man came out of the house with a shotgun. Police repeatedly asked him to drop the firearm but he refused.
He was then shot by police, she said.
The gunman has not yet been formally identified.
However, he was known to police and facing active charges.
Police said they would not be in a position to release the man's name until this has been completed and all next-of-kin had been informed.
Rogers said the man's family and police staff involved in the incident were being well supported.
"Serious incidents such as this are really upsetting for all involved. As we've said before this really is a worst-case scenario for our staff who unfortunately were put into a position last night where they have had to use lethal force to ensure not only their safety but the safety of the wider community.
"We now also have a family who have lost a loved one and so we will do what we can to ensure they are well supported along with Victim Support."