Ahmad, 39, was shot dead in a hail of bullets in Narelle Crescent on Wednesday, April 27, about 9.30pm and despite the efforts of police and paramedics, died at the scene.
The investigation subsequently formed part of ongoing inquiries by Task Force Erebus into several fatal shootings and criminal activities by organised crime networks across Sydney.
Three men aged 26, 37 and 49 have previously been charged over their alleged involvement in the murder and remain before the courts.
Following further inquiries, detectives raided properties at Canterbury, Riverwood, Lakemba and Roselands early Wednesday morning, allegedly seizing $60,000 cash, mobile phones, a CCTV system, documents and other items relevant to the investigation.
A 29-year-old man arrested at the Canterbury property was charged with accessory before the fact to murder, participate in criminal group, and use false document.
Investigations under Task Force Erebus continue.
