PHOTO: A man is arrested by detectives as part of a long-running probe into Sydney’s organised crime network. Supplied: NSW Police

New South Wales detectives have charged 70 people including IT professionals, real estate agents and mortgage brokers, in an investigation into an alleged violent crime syndicate behind a spate of underworld killings.

Police on Saturday went public with the details of a near three-year investigation, revealing more than 70 people had been arrested as a result.

During the investigation period, a series of underworld executions unfolded across Sydney including the alleged murder of Rebels member Michael Davey in March 2016 and several linked or revenge attacks.

Acting Assistant Commissioner Stuart Smith said police alleged the origins of the enterprise came through the Burwood chapter of the Rebels bikie gang.

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