PERUGIA, ITALY (TM NEWS/CNN) - American student Amanda Knox was back in an Italian appeals court today where a battle over DNA evidence is ongoing.
Court-appointed experts said they have serious doubts about the evidence used to convict Knox of killing her British roommate.
But police are defending against accusations that they bungled the investigation.
The court is adjourned until September.
Knox's mother said she thought the court proceedings went well, but that there are too many delays.
"You know, it's hard because she could see that things were going so well, and now there's delays and more new evidence that we've been asking for forever," Edda Mellas, her mother, said. "Why always now? It's hard because she wants it to finish."
Knox is currently serving 26 years in prison for the murder of Meredith Kercher.
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