Gang-squad detectives are investigating the drive-by shooting of a family home in Blacktown four weeks ago. Investigators refused to comment on the case but have said all lines of inquiry are open. That includes whether the drive-by shooting was related to other shootings at homes linked to gang-members around western Sydney in the past few weeks. Police believe the shooting at Indigo Way at Blacktown on the night of August 9 was a case of mistaken identity. The Department of Housing property was formerly occupied by a family linked to the gang Notorious but had a family of six Afghan refugees living in it at the time of the shooting. No one was harmed despite three bullets penetrating the interior walls of house.