The Zetas have many sides, but how and why the gang settled in Monterrey explains a lot about who they are and how they operate.
A Mexican human rights NGO says close to 25,000 people have been displaced from Sinaloa state due to fighting between drug cartels over the past several months, according to InSight Crime.
In a raid Wednesday, Mexico police shot Arturo Beltran Leyva, the "boss of bosses," the top drug lord in the country. Beltran is the highest ranking figure taken down since President Felipe Calderon took office in 2006.
A top operative of Mexico's infamous Sinaloa cartel was arrested Monday.