Sixty policemen have joined a new team targeting organized criminal gangs suspected to be responsible for a string of recent murders in Sydney in an effort by the New South Wales police to halt escalating gang violence.

In the previous 18 months, thirteen people have been killed in the west and south-west of Sydney due to alleged gang violence.

Tuesday night, two Comanchero gang members were gunned down at a gym in western Sydney. Omar Zahed, 39, was murdered, while his brother, Comanchero gang leader Tarek Zahed, 41, was gravely injured.

On Saturday, 23-year-old Rami Iskander, the nephew of slain gangland member Mahmoud "Brownie" Ahmad, was shot to death at his house in western Sydney. This was the third fatal shooting in recent weeks.

In response, NSW police stated that it would establish taskforce Erebus, which will investigate the circumstances and connections between recent fatal shootings, dozens of acts of violence, and the distribution of illegal drugs, illegal firearms, car theft, and other criminal activity.

The Australian Federal Police, detectives in southwest Sydney, the NSW Crime Commission, and the Australian Criminal Intelligence Commission, are brought together through this initiative.

Darren Bennett, detective chief superintendent, stated that sixty officers would work full-time in the task force, coordinating investigations on the most recent gangland murders and redouble efforts to prevent such murders.

Bennett stated on Monday, "It is in no way an exact science."

Police investigating criminal organizations have detained 260 individuals and filed over 840 charges since October.

Mick Fitzgerald, the assistant commissioner and state crime commander stated that Erebus would expand on previously acquired leads and "ensure they have the resources to continue targeting and putting pressure on these criminal groups on all fronts."

Earlier, the premier of New South Wales, Dominic Perrottet, refuted accusations that police lacked adequate resources to combat well-funded criminal gangs.

He added that the government was also working on legislation to address unexplained wealth and criminal earnings.

"I met with police commissioner [Karen] Webb last week, and I have full faith in the current operation," he told Sydney radio station 2GB.

"Anyone who is involved in this violence will be tracked down and imprisoned," he warned.