The Police Commissioner says the new scheme designed to tackle gang crime will set police up for future measures. 

The specialised National Gang Unit will have 25 to 30 people, and up to seven ring-fenced officers in every police district.

Commissioner Andrew Coster says these units will examine the gang activity happening in various districts to combat harm.

"We know we're going to need to move resources around to enable this enforcement to occur - and these gangs will sit at the core of that."

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