Two men arrested over the shooting of a police officer in Melbourne

Two men have been arrested over the shooting of a police officer in the north-west of Melbourne earlier this month.

A 31-year-old police officer, Constable Ben Ashmole, 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 on July 7.

A 22-year-old man in Morwell, and a 24-year-old manin Oak Park were arrested early on Tuesday morning. Both men are currently in custody assisting police with inquiries.

Police officers are searching a number of properties in Morwell, Pascoe Vale, Traralgon, Oak Park, Glen Waverley, Cranbourne West and Strathmore.

Investigator is considering gangland links to the shooting, as gunshots were fired into the home of George Williams who is the father of murdered gangland figure Carl Williams.

A gun was found a week after the incident in Coburg close to a burnt out four-wheel drive, which was believed to be used in the shooting, and possibly linked to the gangland, police said on July 14.