A fourth man has been charged with murder after a 16-year-old was killed in a drive-by shooting in Melbourne’s inner-north earlier this month.

Ater Good was gunned down near the intersection of Brunswick and King William streets in Fitzroy just after midnight on January 3.

A 20-year-old Heidelberg man was arrested about 11am today in Thomastown, where police seized two shotguns from a property.

Ater Good died after he was shot in a drive-by shooting in Fitzroy shortly after midnight on January 3. (Gofundme)

He has been charged with murder and was due to appear at Melbourne Magistrates’ Court today.

Three properties in Heidelberg and two in Heidelberg West were also raided.

A 31-year-old Heidelberg man was also arrested this morning.

He was released pending further enquiries.

Three men were charged with murder earlier this month over the alleged drive-by shooting.

They include a 19-year-old Heidelberg West man, a 20-year-old Bundoora man and a 21-year-old Heidelberg man, who was arrested at Melbourne Airport.

All three men have been remanded to appear before Melbourne Magistrates’ Court on June 15.

Another man was with the victim when he was shot near Fitzroy police station. (Victoria Police)

Police are continuing to investigate whether there are any links between the Fitzroy shooting and the New Year’s Eve stabbing of two men on Lygon Street in Carlton.

Two men were critically injured after a group of about seven men armed with machetes and knives attacked them outside a restaurant about 11.45pm.

A 20-year-old Heidelberg West man and an 18-year-old NSW man were seriously injured and taken to hospital.

A 21-year-old Fitzroy man, a 21-year-old Richmond man and a 17-year-old boy from the Melbourne area have been charged with multiple offences including violent disorder and affray.

Detectives, regional police and special units have established Operation Firelong to investigate the two alleged crimes and prevent ongoing violence.

The investigations remain ongoing.