Levy's mother, Susan Levy, asked Ingmar Guandique directly if he had been responsible for her daughter's death. He shook his head.
"Mr. Guandique, you are lower than a cockroach," Susan Levy told Guandique, before closing her statement by using the F-word.
Guandique, wearing an orange prison jumpsuit, told the judge in Spanish that he was sorry for what happened. But, he added, "I had nothing to do with it. I am innocent."
A jury convicted Guandique of first-degree murder in Levy's 2001 disappearance and death, despite a lack of witnesses and no DNA evidence linking him to the crime.
Her disappearance drew widespread attention when she was romantically linked with Gary Condit, then a California congressman. Condit was initially suspected by police, but they later indicated they no longer believed he was involved.
A year after the disappearance, Levy's remains were discovered in Washington's Rock Creek Park, where she had gone jogging.
Guandique's request for a new trial was rejected even though his lawyers said he should get a new trial because jurors improperly shared notes in reaching a verdict.
In addition, prosecutors improperly appealed to the jury's emotions and facts that weren't part of trial evidence in making a graphic final statement, the lawyers had argued.
The Associated Press contributed to this story.
