Two men have been remanded in custody after being charged with attempted murder over the shooting of a police officer in Melbourne's north-west on July 7, following a raid by the Victoria Police State Anti-Gangs Division.

Rodney Phillips, 23, of Oak Park and Sam Liszczack, 22, of Morwell, made a brief court appearance and were ordered to return to court in November.

The court heard police will need to transcribe 1,500 telephone intercepts and obtain security footage from 80 locations as part of their investigations.

Both men have been charged with attempted murder, firearm charges, arson, reckless conduct endanger life and theft of motor vehicle.

Constable Ben Ashmole, 31, was shot in the back of the head after he and his partner tried to pull over a car in Moonee Ponds about 3:40am.

Victoria Detective Superintendent Peter De Santo said the charges also related to gunshots fired into the Broadmeadows home of George Williams, father of slain gangland figure Carl Williams, just before the incident.

The men were also being charged in relation to a number of Molotov cocktails that were hurled at a home blocks away from where the shooting took place, he said.

"The charges relate to matters in Katandra Crescent [and] Primrose Street and that is the shooting attacks on George Williams' home, the fire bombing attacks on the houses in Primrose street," he said.

He said searches at a number of properties in Morwell, Pascoe Vale, Traralgon, Oak Park, Glen Waverley, Cranbourne West and Strathmore on Tuesday were part of the investigation.

"All of the warrants executed across locations today are in relation to the ongoing investigation of this matter," he said.

"I won't comment on the resources that we have put into it other than to say that we are very grateful for the assistance from Victorian community, and reassurance to the communities out in Katandra crescent and Primrose Street we have resolved the matters."

Constable Ashmole escaped the shooting with minor injuries, after he and another officer tried to stop a black car, but the driver allegedly sped off.

Police forensics team photographs the scene at Moonee Ponds in Melbourne, where an officer was shot after pulling over a car on July 7. ( AAP: Tracey Nearmy )

After a short pursuit, the officers tried to block the car with their van on Robinson Street but the driver steered around them, before allegedly shooting from a 12-gauge shotgun out of the window.

Detective Superintendent De Santo said Constable Ashmole was "well [and] recovering" though he is not back at work.