Australian Federal Police Commissioner Mick Keelty said that the bombs used appear to have differed from previous blasts in that most deaths and injuries had been inflicted by shrapnel, rather than chemical explosion.
Komisioner Polisi Federal Australia Mick Keelty mengatakan bahwa jenis bom yang digunakan tampaknya berbeda dari ledakan sebelumnya yang terlihat kebanyakan korban meninggal dan terluka diakibatkan oleh "serpihan tajam" (shrapnel), dan bukan ledakan kimia.