Another man has been arrested and is expected to face charges over the execution-style murder of a Sydney underworld figure in the city's southwest.
Four men are already facing charges over the death of Mahmoud Ahmad, who was killed in a spray of bullets fired from several cars in April 2022.
Police allege one of two men arrested on Monday helped dispose of the cars involved in the attack last year.
The 39-year-old was shot repeatedly as he stood on the street outside a friend's house in Greenacre about 9.30pm on April 27 last year.
Officers attached to Task Force Erebus executed search warrants on Monday at four homes across Sydney's southwest and arrested two men, both aged 33.
Police say the two men, who are related, were taken to Bankstown police station for questioning.
Detective Chief Superintendent Jason Weinstein said one of the men, from Clemton Park in Sydney's southwest, was expected to be charged as an accessory after the fact to the murder of Ahmad.
The man is also facing charges relating to commercial drug supply, and a separate offence of soliciting another murder that police say is unrelated to the Erebus investigation.
The other man from Campsie is expected to be charged with commercial drug supply, soliciting murder and other offences.
Taskforce Erebus was formed a year ago after a spate of gangland-style execution murders across Sydney.
"Today is just a further commitment to the people of NSW, that the state's police force will not rest until all of these murder are solved," Det Supt Weinstein said.
"Today's charges show that linkages between organised crime, large-scale drug supply, and the homicides that can result from such activities."
Police will allege the 33 year-old man from Clemton Park, who is related to a man already charged over the Ahmad shooting, was involved in moving the cars involved in the attack after it took place.
"We've said that these homicides, especially in the organised crime environment, are very complex matters. It takes more than just one individual," he said.
Several people are facing court over eight other organised crime homicides that took place around the same time Ahmad was gunned down last year.
"We are closing in. More and more every day, on those individuals who actually fired the shots into Mr Ahmad.
"We're still investigating and we will not stop until such time as we have those who committed the actual homicide in custody."
The investigation into the killing of Ahmad had also uncovered a plot to kill someone else, in an unrelated matter, Det Supt Weinstein said.
"We have basically stopped that murder from occurring."
The city's bitter gang wars had almost petered out over the last few years, he said.
"We don't believe that we now are in a position where we are currently having any escalation. In the two years before Mahmoud Ahmad's death, there were 17 organised crime murders.
"This year alone, there's been one organised crime homicide."