David Warner has accused Cricket Australia of conducting a flawed investigation into the 2018 Sandpapergate scandal, questioning why three senior bowlers were allegedly not interviewed. His remarks have intensified the controversy surrounding Usman Khawaja's revelations in his autobiography. New Delhi: Former Australia opener David Warner has accused Cricket Australia (CA) of conducting a flawed investigation into the 2018 ball-tampering scandal, questioning why senior fast bowlers Josh Hazlewood, Mitchell Starc and Nathan Lyon.