(AP Photo/Jacquelyn Martin)

Citing “new information that the government received within the past week,” prosecutors have dropped charges against Ingmar Guandique in the 2001 murder of Chandra Levy.

Guandique was granted a retrial last year after his lawyers argued that his 2010 conviction “was based on a lie” and the government never disclosed that their key witness had cooperated in other cases. The U.S. Attorney’s Office for the District of Columbia now says that it “can no longer prove the murder case against Mr. Guandique beyond a reasonable doubt.”

Levy, a Federal Bureau of Prisons intern, disappeared while jogging in Rock Creek Park; her remains were found a year later. Her disappearance became a national story when police initially suspected former California congressman Gary Condit, who was having an affair with Levy at the time. Years after Condit was cleared, Guandique—who was serving a 10-year prison sentence for assaulting two other women at knife point in Rock Creek Park—was tried and convicted for killing Levy. However, there was no forensic evidence linking him to the crime, and the conviction hinged on testimony from a cellmate who said Guandique confessed.

Prosecutors have not disclosed the nature of the “recent unforeseen developments.”

Guandique, who was initially sentenced to 60 years in prison, will be released to the custody of U.S. Immigration and Customs Enforcement, which will seek to deport him.