The WA Joint Counter Terrorism Team confirmed they are investigating the rally incident as a ‘potential terrorist attack’. The WA Joint Counter Terrorism Team confirmed they are investigating the rally incident as a ‘potential terrorist attack’. Credit: The West AustralianPolice are probing the alleged throwing of a homemade bomb into an Invasion Day rally crowd as a “potential terrorist act”. WA Police Force, Australian Federal Police and the Australian Security Intelligence Organisation have since confirmed they are investigating the incident as a “potential terrorist act”. In a joint statement on Wednesday night, the Western Australia joint counter terrorism team said its investigation was ongoing and further charged had not been ruled out.