Who are the Jalisco New Generation Cartel and why are they so feared?

El Mencho, head of the Jalisco New Generation Cartel, was killed on Sunday (Pictures: EPA)

Violence has broken out in Mexico after the assassination of Nemesio Ruben Oseguera Cervantes, known as ‘El Mencho’ – a high-profile cartel leader.

Head of the Jalisco New Generation Cartel, known as CJNG, El Mencho oversaw operations of one of the most powerful and fastest growing criminal organisations in Mexico.

Formed in 2009, the CJNG has become known for its aggressive tactics and attacks on the military...