Derek Capozzi of Boston, Mass. was sentenced on Monday after escaping from custody back in 2010.
Capozzi was testifying at a trial in Kentucky and was being escorted back to Bluegrass Airport when he escaped the vehicle transporting him.
Capozzi was found three days later.
The 51 months will be added on to the 53 years Capozzi is already serving for dismembering the body of a young woman and the use of a firearm in a violent crime.
Capozzi is also said to have ties to organize crime.