Former Australia opener David Warner has carried on to back Usman Khawaja following his explosive claims about the 2018 ball-tampering scandal, also known as Sandpapergate. A few hours after Australia captain Pat Cummins addressed the allegations at a press conference in Sydney, Warner accused him of throwing Khawaja under the bus.Warner, who was handed a 12-month ban for his role in the 2018 scandal, endorsed Khawaja's version of events in his autobiography, Sabr. Khawaja has claimed that all members of the Test squad knew about the use of sandpaper during the Cape Town Test against South Africa.This contradicts Cummins' public statements. The current Australia captain has repeatedly rejected knowing about the sandpaper plot.Speaking on Fox Cricket's coverage of Australia's first ODI against England at Optus Stadium in Perth, Warner made his support for Khawaja clear.“I still stick by Uzzie,” he remarked.“And what he's written in that in that book. It is the truth and I really, really support him.“I actually feel for him at the moment. I actually feel that the captain today actually threw Uzzie under the bus. And I'm very, very disappointed about that.”Warner also repeated his censure of the investigation into the scandal, describing it as "botched."Cummins calls Khawaja's claims 'complete and utter nonsense'Cummins held a news conference at the Sydney Cricket Ground on Friday, hours before Australia's home-season opening ODI against England in Perth.He remarked he was ready to answer questions for as long as needed because he wanted to put the controversy behind him.Khawaja's autobiography has brought the eight-year-old scandal back into the spotlight. He claimed that the whole squad knew about the ball-tampering plan.Cummins, who was part of Australia's bowling attack in the Cape Town Test, strongly rejected the claim in the book.“When he says we all knew, if by that he means that we knew sandpaper was going out in the field, he's 100% wrong,” Cummins noted. “I've said that consistently for the last eight years. I did not know that was happening.“But I think Usman actually says things that are actually far more serious than that. He says that I and others were architects of a scheme to ball tamper with sandpaper. That's complete and utter nonsense.”What happened in the 2018 Sandpapergate scandal?The controversy erupted during Australia's Test against South Africa in Cape Town in March 2018. Cameron Bancroft was caught on camera using sandpaper on the ball.Following a Cricket Australia inquiry, three athletes received bans. Then captain Steve Smith and vice-captain Warner were suspended for 12 months, while Bancroft got a nine-month ban.Get the newest Sports News and Live updates. Download the TOI app.