Prosecutors say they will not retry a man convicted of killing Washington intern Chandra Levy.

The U.S. Attorney's office said in a statement Thursday that the office has moved to dismiss the case charging Ingmar Guandique with Levy's 2001 murder.

According to the statement, prosecutors concluded they could not convict Guandique "based on recent unforeseen developments that were investigated over the past week." The statement does not elaborate.

Levy's 2001 disappearance created a national sensation after the Modesto, California, native was romantically linked with then-Congressman Gary Condit.

Levy's remains were found in Washington's Rock Creek Park in 2002. Prosecutors argued her death fit a pattern of attacks Guandique committed on female joggers. He was found guilty in 2010 of Levy's murder but granted a new trial last year.