The Cumberland County Sheriff's Office said new technology did not provide any clues in the unsolved case of a murdered newborn three years ago.
The baby, known as Baby Michael, was found in a Grays Creek ditch in March 1999. Detectives are still looking for his mother
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Detectives said they did not find any fingerprints on a trashbag the newborn was wrapped in. They recently sent the bag off to the U.S. Secret Service for a technique called vacuum metal deposition.
The test is a way to obtain fingerprints from items that have already been processed by other methods.
The results came back negative.
There is a $6,000 reward for information that leads to an arrest in the case.