Closing Arguments Begin in Amanda Knox Trial

Closing arguments begin today for Amanda Knox's murder appeal. A verdict is expected in early October. Knox was convicted in 2009 of sexually assaulting and murdering her roommate Meredith Kercher while studying in Perugia, Italy in 2007. She was sentenced to 26 years in prison. The defense argues that DNA evidence was greatly mishandled during the investigation. A forensics expert testified earlier in the trial that none of Knox's DNA has been found on the knife allegedly used to kill Kercher.