Peter Van Sant, producer of "48 Hours Mystery," said a report on the harassment allegations is included in a story on the case to be broadcast Saturday evening. He was interviewed Friday on "The Early Show."
"We learn about sexual harassment inside prison where an administrator would take her up to his office alone at night and say a number of inappropriate things to her, and that left Amanda terrified," Van Sant said.
Knox, a former student at the University of Washington, and her Italian boyfriend, Raffaele Sollecito, were freed Monday by an Italian appeals court. They had been convicted of killing Meredith Kercher, a British student who shared a house with Knox while both young women were spending a year in Perugia.
Curt Knox told Van Sant he saw his daughter slump in her chair as the court delivered the decision Monday and immediately thought the conviction had been upheld. But an Italian lawyer then turned around and said "she's free."
Rudy Guede, an immigrant from Ivory Coast, was convicted in a separate trial of killing Kercher. Lawyers for Knox and Sollecito said he was the only person involved in the crime.