Question: In what year did this criminal group, formed by former soldiers of the Mexican Armed Forces and Founded by Nabor Vargas Garcia, break away from their former employer and form their own criminal organization?
Related documents: [0]  [DOC] Los Zetas (] , Spanish for "The Zs") is a Mexican criminal syndicate. Considered by the US government to be "the most technologically advanced, sophisticated, efficient, violent, ruthless, and dangerous cartel operating in Mexico", the organization has expanded beyond the traditional purview of drug trafficking and also runs profitable sex trafficking and gun running rackets. The origins of Los Zetas date back to the late 1990s when commandos of the Mexican Army deserted their ranks and began working as the enforcement arm of the Gulf Cartel. In February 2010, Los Zetas broke away from their former employer and formed their own criminal organization. [END] 
[1]  [DOC] Nabor Vargas García (born 12 July 1976) is a Mexican suspected drug lord and one of the founders of Los Zetas, a criminal group formed by former soldiers of the Mexican Armed Forces. [END] 
Answer: 
2010
2010