One of Colombia’s legendary drug lords and a key operator of the Medellin cartel has been deported back to the South American country, after serving 25 years of a 30-year prison sentence in the United States.

A short while later, Fabio Ochoa was again a free man. Ochoa arrived in Bogota on a deportation flight on Monday afternoon, wearing a modest grey sweatshirt and carrying his personal belongings in a plastic bag. After stepping out of the plane, Ochoa was ...