ACT Policing said officers responded to reports of gun shots on Fairhall Street just before 3am, and found multiple shots have been fired into the side of a car.

A women in the targeted home, who did not want to be identified, told The Canberra Times she heard four gun shots and a car driving away from the scene. She had been at home with another woman and young child and did not know why they had been victim to the attack.

The bullets smashed through the white Commodore's window and out the other side impacting two other nearby cars.

Several residents reported hearing gunshots, police said, but no one was injured.

Residents reported seeing a car speeding away. It was last spotted travelling east on John Gorton Drive.

It was believed to be a targeted attack, but police do not suspect criminal gang involvement.

Detective Acting Superintendent Mark Steel said three shotgun casings found at the crime scene were being forensically examined.

"We're treating this as a targeted attack and not a random attack," he told reporters on Friday.

"The wider community shouldn't be concerned about any random attacks at this time."

A sweep for any CCTV footage in the area is being undertaken and police have called for anyone with information to come forward.

"Obviously we had the stabbing in Weston Creek a couple of weeks ago, Canberra is still a safe place to live," he said.

"These are certainly isolated incidents and they are not linked. Crime in the Molonglo Valley is certainly down from previous years.

"These are serious incidents and we're treating them as such."

Police believe after examination of the ammunition a shotgun was used in the attack not a Glock pistol like the one taken from a police vehicle last week.