On the north coast of Colombia there is anxiety over the return to the South American country of one of the most feared former paramilitary commanders: Hernán Giraldo Serna. “El Patrón” (the boss) or “El Taladro” (the drill, as he became known for sexually abusing girls in the area) stepped on Colombian soil Monday after finishing a 16-year sentence in a U.S. prison for drug trafficking earlier this month.

Giraldo, 74, was deported from the U.S. and immediately taken into custody by authorities in Colombia, where he is expected to serve time for crimes against humanity, including torture, forced displacement of people, sexual slavery and kidnapping, as well as drug trafficking.

A photo provided by Colombian immigration authorities showed Giraldo stepping onto a jet bridge wearing a surgical mask and a bulletproof vest on top of gray sweatpants. Another photo showed him walking through a building with heavily armed police ahead and behind him.

Read more: AP