Drug traffickers, especially from Colombia, have been caught using submarines to transport cocaine into Mexico, and from there into the U.S.

Carlos Manuel Tejada, 44, was charged with manslaughter by culpable negligence on Friday in the death of 56-year-old Carmen Rosa Neira Ochoa on Jan. 1. Ochoa was with her two adult daughters ...

Narco-submarines, the clandestine vessels used by drug traffickers, represent one of the most sophisticated and elusive methods of smuggling drugs across international waters.