Drug trafficking adds to the violence. U.S.-led interdiction efforts in Colombia, Mexico, and the Caribbean have pushed trafficking routes into Central America, and U.S. officials report that 90 percent of documented cocaine flows into the United States now pass through the region. DTOs sometimes partner with maras to transport and distribute narcotics, sparking turf wars. In addition to the drug trade and extortion, criminal groups in the region also profit from kidnapping for ransom and human trafficking and smuggling.
https://www.cfr.org/backgrounder/cen...thern-triangle