Sydney, Rabi'II 14, 1436, Feb 3, 2015, SPA -- Two electrical maintenance workers were killed and two injured in a blast at a shopping mall in Western Australia Tuesday. An electricity transformer exploded in the Galleria centre in Perth, dpa quoted a police spokesman as saying. One of the men died at the scene while the other died in hospital. Two men were being treated for serious burns. Police said the cause of the blast was being investigated. --SPA 18:22 LOCAL TIME 15:22 GMT www.spa.gov.sa/w